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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1
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1answer
31 views

Projecting as USA_Contiguous_Albers_Equal_Area_Conic_USGS in QGIS?

Is it possible to project EPSG: 6350 (NAD83 (2011)) as WKID: 102039 (USA_Contiguous_Albers_Equal_Area_Conic_USGS) in QGIS? There is no EPSG code and I'm unsure how to create a custom CRS.
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0answers
25 views

Getting updated list of US Zip Code with latitude and longitude?

I have the old list of US Zip Codes which is missing some of the zip codes. How can I get the Updated list of Zip Codes in CSV format?
9
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1answer
623 views

OpenStreetMaps offline tile packs

Is there a place where I could download OpenStreetMaps tile packs for the united states? I would like to have offline access for the whole country.
0
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1answer
105 views

Looking for an Elko County Nevada Land Ownership Shapefile

I am looking for a Nevada Land Ownership shapefile. County and state GIS don't seem to have anything beyond pdf. Are there any public or commercial avenues to acquire land ownership in Nevada? I'...
0
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1answer
142 views

Looking for a complete list of cities by state, with area code

Our company is working on moving our sales assignments from area codes to ZIP codes, and we need some kind of dataset to help move existing assignments to the new system. Does anyone here know where ...
1
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1answer
715 views

COUNTY WebService API lookup from valid street address

I am looking for a solid WebService API that will allow me to submit an http request with a pre-validated US Street/City?state/Zip Address and return COUNTY in xml or json about 200 times per work day....
1
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1answer
134 views

What projection should be used along Gulf Coast?

What projection should I use along the Gulf coast - spanning the west coast of Texas to the Florida panhandle. I need to perform spatial analysis for a data-set along the coast. I see a similar ...
0
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1answer
49 views

Adjusting Alaska and Hawai in d3

I am quite new to d3 and I am trying to make a choropleth map of the US. But my point is how to adjust Alaska and Hawaii in the final map. In the past I used to do this in Illustrator, but I am not ...
2
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1answer
964 views

Mapping Longitude and Latitude to US state

Is there any database (Gov data or private) or web service that map Longitude and Latitude to US state? I have the specific Longitude and Latitude of a location and would want to identify the state ...
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1answer
34 views

Seeking Boston shapefile 1630?

I found this map on Reddit and was curious if anyone knows how it was made. https://www.reddit.com/r/boston/comments/2xu9ix/modern_map_of_boston_compared_to_original_1630/ I think I could make it ...
12
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7answers
20k views

Source for GeoJSON data for the US

Does anyone know of any good sources for US data (counties, congressional districts, etc) in GeoJSON format? Has anyone converted public-domain shapefiles/sources to GeoJSON that they would be willing ...
2
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1answer
48 views

Seeking USA congressional district to county relationship files?

This must be a common enough problem that other users have come across it. I've finagled my way around inconsistencies and dropped observations, but now I'm reaching out to see if anyone knows of a '...
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0answers
29 views

Obtaining geographic data for California?

Where can I download census tracts and infrastructure data of California for 1997?
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1answer
50 views

Seeking API/software tool that will return US state senate and state house district number for given latitude/longitude?

I have a bunch of addresses that I need to find the corresponding State Senate and State House district for their latitude and longitude. It is possible to use shapefiles in QGIS to get this ...
0
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1answer
165 views

Seeking crosswalk of census tract to town instead of CDP?

I'm trying to match towns from a dataset to Census tracts in the year 2000, with FIPS code as a place identifier. I'm aware of http://mcdc2.missouri.edu/websas/geocorr2k.html#GFOPTS, the GeoCorr ...
17
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8answers
40k views

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.
1
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1answer
45 views

Downloading digital elevation model of United States?

I would like to download a digital elevation model of the United States, where can I do this? It doesn't need to be super detailed. But it would be nice, if was clipped at the country borders – ...
0
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2answers
790 views

Seeking lat/lon for county seats?

I'm currently designing a map for methamphetamine labs in my state. Ideally what I need is the center lat/lon coordinates for each county in my state or the lat/lon coordinates for each county seat. ...
6
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4answers
2k views

Using American Fact Finder to download data for all block groups in state at same time?

I am having issues using the advanced search on the American Fact Finder to download census block data for a whole state at a time. The best option that it gives me, when trying any route, is to ...
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0answers
15 views

Regarding Sec Town Range? [duplicate]

This is regarding Sec Town Range. I have received this in parcel shapefile. Is there any way to use this to index the data?
39
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10answers
46k views

Where to get 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. Is it there? And if not, does anyone know where I could find it?
2
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3answers
265 views

Seeking open source bulk US DEM or imagery? [duplicate]

I am looking to create terrain hillshading for my maps that contain a small region of the US. I intend to show about eight to ten states at a time (at about ~1:5,000,000 scale). It has been some ...
0
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2answers
75 views

Where can I find historic aerials for some areas in Dona Ana County, New Mexico?

How do I find several historic aerials from the mid-1970's or early 1980's and where can I download them and I would like them to be free of charge. Cheers,
0
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0answers
86 views

Solar Insolation Product with highest spatial resolution

My objective is to compare gis derived Solar Insolation against remotely sensed one. However modis has far coarser resolution then required. Is there any other product released? The site is in ...
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1answer
36 views

Seeking population data for Detroit?

I need population and age breakdown data for Detroit. I have found census tract shapefiles but none with the attribute data that I need. Any idea where I might find such data?
3
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3answers
2k views

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 ...
0
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2answers
78 views

Seeking Farm Resource Regions shapefiles?

Could someone direct me to the potential sources to find the Shapefiles of farm resource regions? The map exactly looks like the one here https://www.usda.gov/media/blog/2014/04/22/celebrating-our-...
0
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1answer
36 views

Watershed layers that drain to ocean?

I have been searching for a watershed layer for California or for the entire US that encompasses all upstream area from ocean outlets (e.g. the entire catchment draining into each ocean output). I ...
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1answer
33 views

Seeking New York Neighborhoods Boundaries?

I need a source of New York neighborhoods boundaries coordinates, I need to draw polygons around them just like this page is doing to Wingate, Brooklyn. https://www.exrny.com/listings/121719/2-bed-in-...
4
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3answers
232 views

CRS for submission to Minnesota DOT

Does anyone have experience using QGIS to submit shapefiles to the Minnesota DOT (MNDOT)? I am using EPSG:26915 but got rejected due to an error in the CRS. MNDOT Specs call for "UTM coordinates,...
16
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2answers
3k views

Why are Galileo satellites inaccessible in USA?

I see that some (or all?) Android devices that support Galileo global positioning system are deliberately programmed to self-disable their Galileo support when used in USA or US territories. This ...
1
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1answer
49 views

Comparing Tract-level data to State-level?

I'm using firearm trace data (available at the state-level) and attempting to compare it to socially disadvantaged areas (census tracts) by the way of regression analysis. Katz and Schnebly (2011) ...
0
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1answer
304 views

Sea level rise prediction by zip code in the U.S. coasts

I'm relatively new to GIS data and am working on a project on climate change. I can find online predictions of sea level rise by zip code in the U.S. East, West and Gulf Coasts (for example: http://...
0
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0answers
15 views

Translating Location Format from Wisconsin (USA)?

I have a location format in the form of '28N-24E-36' within a certain county (not sure that's important). I found a map that lists Section-Township-Range for the county of interest as six integers ...
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1answer
32 views

Seeking contour (topo) lines for United States?

I can find five foot contours for most areas, where can I find 1 foot or 2 foot contour lines? Prefer ArcGIS or AutoCAD but will take anything I can get.
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4answers
131 views

Why does ASTER create -0 to 0 instead of -1 to 1? [closed]

On my previous question on ASTER I need some more information on ASTER for time series analysis and I need to research on building NDVI because when I ran them for each ASTER. Most of them it came out ...
0
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1answer
93 views

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? ...
0
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1answer
36 views

Using legal descriptions of lands and their subsections to draw polygon?

I have Legal descriptions of land (Section, Township, Range) and their subsections (N1/2, S1/2, E1/2, W1/2, NW1/4, SW1/4, N1/2NW1/4, etc.) I want to have a polygon encompass the subsections of the ...
0
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2answers
140 views

Seeking US Highway exits shapefile? [closed]

Does anyone know where to download a shapefile containing the locations of US interstate and highway exits?
4
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4answers
7k views

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 ...
2
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3answers
11k views

Local geolocation to FIPS county using Latitude and Longitude

I millions of lat,long pairs and I want to convert to FIPS county codes that match with the US census data. In the past I used the census block api but that is too slow for the amount of numbers that ...
1
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3answers
7k views

List of the United States (US) state boundaries / borders as latitude/longitude pairs for geofence?

I'm just trying to find a single simple file (CSV or XML ideally) which has the latitude and longitude pairings for each of the 50 United States (plus DC, though the addition of provinces such as ...
1
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3answers
388 views

Which coordinate system is the best for a distances from whole USA?

I have about 100 cities all over the USA and want to calculate some distances. According to that I want use one coordinate projection and need to know which one is the best so I can get the most ...
1
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0answers
237 views

Source for US urban-suburban-rural classifications by census tract

I would like to assign every U.S. census tract its own unique classification on the urban-rural spectrum. USDA's Rural-Urban Area Commuting Codes (RUCA) is a good start, but it's focus is rural - it ...
0
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2answers
723 views

Seeking Metropolitan Statistical Area (MSA) KML data? [duplicate]

GIS is not my field. I need this data for an odd job at work. I have been unsuccessful in finding the data from Google FusionTables but found (what I believe to be) the shapefile for MSA's from the ...
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2answers
209 views

Seeking Chesapeake Bay Watershed Boundary Shapefile?

Does anyone have the shapefile that depicts the boundary of the Chesapeake Bay Watershed? I have looked through countless GDB's from government agencies without any success.
3
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3answers
5k views

Seeking Mississippi Township Range Section shapefiles?

Does anyone know where I can get a full complete T/R/S for Amita County in MS? Geocomm shp files looks incomplete. The counties in Mississippi are not helpful. I ended up finding the TRS from ...
53
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10answers
53k views

Sources for US Zip Code Boundaries?

I was just wondering what the most up-to-date source for US Zip Code boundaries would be. My first thought was TIGER, whenever that comes out, but then I thought that the Postal Service might be a ...
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1answer
206 views

Which state of the USA doesn't constitute the Continental United States? [closed]

In a Wikipedia article, Continental United States, I could not get which state is the exception: "The Continental United States is the area of the United States of America that is located in the ...
4
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1answer
302 views

Seeking Septic Tank Location Data for Southeastern United States?

I am compiling a database of septic tank locations to make some rough estimates of the magnitude of return flow to the groundwater system for the Floridan aquifer system. Ideally I would have a lat/...