Questions tagged [united-states]
Use this tag for Questions which are specific to the country of the United States of America (USA), Do not use for United States Virgin Islands (VIR)
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Seeking sources for US Zip Code Boundaries [closed]
What are the most up-to-date source for US Zip Code boundaries?
My first thought was TIGER, whenever that comes out, but then I thought that the Postal Service might be a better bet.
50
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12
answers
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Geocoding USA addresses that cannot be sent over Internet
For a one-time project, I need to geocode a few thousand addresses. In the past I've used various online resources for this kind of thing (e.g., Google Maps API), but the addresses I'm working with ...
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2
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What is the source of horizontal and vertical striping in USGS DEMs?
When processing 30m and 10m DEM data downloaded through the National Map Viewer from the National Elevation Dataset, we noticed horizontal and vertical striping not only in the produced results, but ...
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4
answers
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Which projection is best for mapping the contiguous United States?
If I wanted to project latitude & longitude data for the contiguous United States (the United States excluding Alaska and Hawaii), which projection would I use? I prefer more accurate distances ...
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11
answers
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Seeking 2010 Census Block data
I would like to download 2010 Census Block Data for several towns and I can't seem to find it on American Factfinder.
If it is not there, then where could I find it?
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35
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12
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Bulk geocoding 20 million US addresses [closed]
Are there any free or reasonably priced databases for the US which can be searched and return latitude and longitude information?
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22
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10
answers
14k
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Seeking GIS data for fast food industry?
I am working a small project related to fast food industry. I am trying find GIS data for fast food chains like subway, MC Donald's, Arby's, etc in state of Ohio. Basically, I am looking for point ...
34
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9
answers
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Determining which US zipcodes map to more than one state or more than one city?
I'm using a zip code listing, and I am curious to know how many (or which) zip codes map to more than one US state or US city?
For instance I know that Zip Code 42223 resolves to US Army, Fort ...
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4
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2
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Seeking US State or National business (or employer) database lists
This question dovetails with What kind of datasets are necessary for geomarketing applications?.
I am familiar with some of larger, paid-for business registry's like InfoUSA and Dunn & Bradstreet. ...
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59
votes
11
answers
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Obtaining up-to-date list of US ZIP Codes with Latitude and Longitude Geocodes? [closed]
NOTE: This began as a question on Stack Overflow, which has subsequently been closed. I also noticed a similar question about Most Up-To-Date Source for US Zip Code Boundaries, but I believe this ...
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5
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Finding footprint data for US buildings?
Are there any sources for free and distributable building footprint datasets for major cities around the United States?
Ideally, the data would also have the number of stories of each building; is ...
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1
answer
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Choosing projected coordinate system for mapping all US states?
I'm on a project requires integrating data for all states in the US. It means I have two roadway datasets and I'm going to assign the attributes of roadways in one dataset to the same roadways in the ...
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2
answers
13k
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What is Google source for United States topographic data? [closed]
I'm looking for as detailed as possible topographic data for a certain area and have found information displayed by Google Maps to be far more detailed than what is provided by 7.5 minute maps (from ...
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5
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Seeking shapefile of city boundaries in US?
Where can I find a shapefile that contains boundaries for the major cities in the United States?
I have tried the census website but could not find anything.
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4
answers
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Downloading DEM data for US?
USGS has been moving towards serving data through The National Map Viewer. They have several WMServices through their website that serve elevation data to the public (hillshade & DEM). The ...
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5
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3
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2k
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Reprojecting from Michigan GeoRef to WGS84 in QGIS
I am trying to reproject a Michigan state land shapefile which is the NAD83/ Michigan Oblique Mercator EPSG:3078 to the WPG84 EPSG:4326 projection. However when i try to do this my map gets squished ...
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4
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1
answer
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Difference between NAD83 Indiana SPW in QGIS and ArcGIS for Desktop?
It seems ESRI and QGIS don't have the same definition for my most commonly used projection, NAD83 StatePlane Indiana West (US ft). When I create data in an ESRI product the projection shows up in ...
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3
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Proj4 String for NAD83(2011) / Louisiana South (ftUS)
I am trying to convert NAD83(2011) / Louisiana South (ftUS) coordinates on survey maps to lat/lon using Proj4 in Python.
Could someone point me in the right direction?
I have verified the lat/...
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1
answer
5k
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Choosing map projections specifically for San Francisco Bay Area?
I am asking because I am not familiar with specific map projections for the San Francisco Bay Area.
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3
answers
3k
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Where can I find the finest granularity of 2010 US census population information?
I am writing a re-districting application where I want to be able to create US voting districts based on geographic coordinate population data. In a perfect world, I would have the population for each ...
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4
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Does the NED use geocentric or geodetic latitude?
What kind of latitude does the National Elevation Dataset (NED) use? Geocentric or geodetic or something else? I can't find the information anywhere on their site (http://ned.usgs.gov/index.html) or ...
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3
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Gathering data for large number of census block groups?
I would like to collect some census data for every block group in New England. I'm primarily interested in median income and median age, and ideally I'd like a large .csv file with one row per census ...
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3
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1
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Choosing Projection for Gulf coast region of USA?
What are the most appropriate datum and projection I could use for the Gulf coast region - spanning Louisiana, Mississippi, Alabama, and Florida? I have to analyze block group data along the coast.
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3
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Downloading US Census data?
I'm in a introduction course for ArcGIS and I'm just starting to work on my project. I'm trying to create a map showing the relationship between poverty and education. I also want to try and present ...
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2
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1
answer
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Getting inaccurate results converting from New York State projection to NAD83 with Python's pyproj
I've been trying to do a standard coordinate translation between New York State Long Island (ESRI:102718) and latitude/longitude (EPSG:4269)...but I keep getting the wrong lat/lng results.
I don't ...
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5
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Data providers equivalent to USDA/NRCS/FSA Common Land Unit (CLU)?
For one of my agricultural projects, I really need reasonably accurate field boundaries for fields in the US, specifically Iowa right now but later, other similar states.
The USDA/NRSC/FSA Common ...
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5
votes
1
answer
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What level of error expected when using NAD StatePlane CRS from adjacent state?
I am adding Georgia data to my GIS database and, unlike the California data I've added, have decided to use my existing EPSG:3361 (South Carolina StatePlane) coordinate reference system for ...
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1
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Getting household income data based on address to block level?
I am beginning a research project and need to find a way to access the census data about household income. We need it at a closer level than by zip code since income varies a lot by zip code in our ...
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4
votes
1
answer
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Determining if road is privately owned or not in USA
I'm working on a project where it matters greatly whether or not a piece of land is on a private road.
Google Maps in many cases takes private roads (for example in master-planned subdivisions) and ...
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4
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2
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Extract tract shapefile from 2006 US Census
I have downloaded the 2006 census tract files.
This version does not have the shapefiles
format but the tiger format.
I am able to load the data in python using following code:
import ogr
...
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4
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1
answer
1k
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USA Contiguous Albers Equal Area Conic to miles
My data is in USA Contiguous Albers Equal Area Conic projection. How can I convert the USA Contiguous Albers Equal Area Conic projection to miles?
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3
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Sites with recreational shapefiles for United States?
Do you know of any sites that I could find some recreational shapefiles?
An example would be shapefiles of golf courses, ski resorts, or maybe baseball fields in the United States?
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2
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GDAL Conversion of US Topo GeoPDFs
I've used GDAL_translate with "--config GDAL_PDF_LAYERS" option to convert US Topo GeoPDFs to GeoTIFF and it works great for creating collarless topos based on the new format.
However, I can't get it ...
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3
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2
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Seeking all US 2010 Census Data at Tract Level [closed]
I'm trying to find where I can download all the data (summarized to the tract level).
By all data, I mean
population
race
Marital status
job
wage
age
sex
same sex couples
kids
education
I need this ...
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3
votes
2
answers
1k
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Projection for Calculating Distances in Continental United States?
TL;DR Question: I want to calculate distance from point to edge of nearest polygon for 2,000 points in Continental United States. What is the best projection to use?
Full Question: I have two ...
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3
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1
answer
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Appropriate projection for US distances?
I am generating distances between crash sites (points) and urban areas (shapes) and am wondering what the best projection is to use for this task. The area of interest is limited to the U.S. (Alaska ...
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2
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3
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Databases of bars, pubs and restaurants in United States and Canada?
I am mostly seeking Bars and Pubs but Restaurants are a very nice bonus. I need a database with zipcode, city, state, longitude, latitude, establishment name, establishment contact information, maybe ...
2
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1
answer
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How do I from convert from street level address to block/block group/census track?
I just downloaded block-level census data, using this answer Where to get 2010 Census Block data?
It output a spreadsheet with a bunch of rows of the format
GEO.id | GEO.id2 | ...
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1
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1
answer
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Appropriate CRS for Close Distances in USA
I have a very big dataset in the form of longitude-latitude points in the US; with points from the entirety of contiguous US. I need to calculate the distances between points and check if they are ...
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1
vote
0
answers
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Number of lanes in road data
I have been learning about the TIGER and the National Map datasets for mapping roads in the United States.
One limitation is that as far as I can see there is no data on the number of lanes. The main ...
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5
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US / Mexican border data
I'm interested in locating free GIS shapefile data representing the US / Mexican border. I have found a point layer depicting the border crossing points but I'm interested in a polyline feature ...
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2
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Why does my phone's GPS suffer from "urban canyon" problems in Beijing but not New York?
In a separate question on Travel.SE I asked why my phone's GPS didn't seem to work in Beijing, China. Turns out that it was simply an "urban canyon" problem, and that the GPS did in fact work when I ...
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1
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Choosing projection for Continental United States?
I'm working on some code that maps data across the continental US.
I need to project things with a unit length of feet, ex: EPSG:26916.
Is there a projection like 26916 that works for all of the US? ...
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vote
1
answer
2k
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FIPS Crosswalk for Census Places
Where can I find a comprehensive crosswalk for FIPS codes at the Place level?
I need to match Census Places from different data sets spanning the period 1980-2010, where each data set is using FIPS ...
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0
votes
1
answer
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How to translate 1980 US Census Place Code to post 1990 Place FIPS?
US Census PLaces are coded differently pre-1990 and post-1990, after the introduction of FIPS Code.
For instance, for Albertville, AL:
Pre-1990 : Place Code - PLACEA : 0030
Post-1990: Place FIPS - ...
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3
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What are the state border outlines called which treat every state as a single entity, including surrounding waters?
What are the state border outlines called which treat every state as a single entity, including surrounding waters?
I need to create a latitude/longitude pairing of each state's "borders", which I ...
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