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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2
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0answers
325 views

Geocoding Guam addresses with their latitude/longuitude? [closed]

I am attempting to get lat/longs for a table of 25,000 addresses for Guam. Guam's addressing style doesn't follow the typical address number range. I've exhausted all of my geocoding resources. ESRI, ...
-1
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1answer
37 views

Seeking US coastal shapefile

I need to calculate distance to the coast based on a latitude and longitude point. My concept is to use a line of the East Coast to calculate the distance. Does anyone know where I can find a ...
0
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2answers
124 views

Seeking Demographic Information of U.S. Census Blocks

I am struggling to find the blockwise (not blockgroup or tract) data like employment status, household income, commuting distance, list of place of interest, industry information. By using American ...
4
votes
1answer
2k views

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 ...
0
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0answers
17 views

Finding satellite imaging showing developments in landcover in specific geographic areas?

I'm a student looking to compare the development in landcover every 5(ish) years across San Diego county & am not finding much luck with it so far.
0
votes
1answer
95 views

Replicating standard D3.js Conical US Albers projection in QGIS?

Oftentimes, when I see maps of the US rendered online, they use a custom version of the Albers projection, like so: Alaska and Hawaii are off to the side, nicely arranged. I'd like to replicate this ...
2
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1answer
850 views

Using US Census block group data field names for feature classes?

I may be missing something here, but it seems like getting usable US Census data into a shapefile or feature class is much harder than it used to be. Downloading the Tiger block group shapefiles is no ...
0
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0answers
28 views

Seeking high resolution real-color (RGB imagery) dataset?

Specifically interested in the the South Florida region, USA. The aim is to pull up high quality aerials to detect manholes and wellheads from space! These things can typically be half a foot to a ...
0
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1answer
21 views

Translating one raster's contents closer to another’s with each at different scales using QGIS?

I'm working with multiple raster images, each in the Albers Equal Area Conic projection: one of the mainland US, one of Alaska, and one of Hawaii. I'd like to translate the Hawaii layer to be closer ...
-1
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1answer
2k views

Seeking GIS data about NYC's combined sewers (CSO) that's free to use? [closed]

I've located two sites that display the data that I'm looking for, but both lack exporting functions. OASIS NYC and maps.nyc/gov Otherwise I can't locate this data anywhere in a format I can use in ...
0
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2answers
91 views

Seeking 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? I would like them to be free of charge.
5
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1answer
117 views

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 ...
9
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1answer
646 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.
1
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1answer
254 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
217 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
1k 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 ...
-1
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1answer
38 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 ...
-1
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1answer
53 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 ...
18
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8answers
44k 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
vote
1answer
63 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
votes
2answers
972 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
3k 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 ...
2
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3answers
268 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 ...
-1
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1answer
57 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
votes
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
votes
2answers
186 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
41 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 ...
0
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1answer
136 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
votes
3answers
252 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
votes
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
vote
1answer
57 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
votes
1answer
324 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://...
-2
votes
1answer
54 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.
-1
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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
votes
1answer
209 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
votes
1answer
59 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
258 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
votes
4answers
9k 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
votes
3answers
15k 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 ...
3
votes
3answers
9k 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
vote
3answers
745 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
vote
0answers
338 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
votes
2answers
779 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 US ...
-1
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2answers
335 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
votes
3answers
6k 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 ...
4
votes
1answer
311 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/...
0
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1answer
40 views

I need to figure where is this location in San fransisco [closed]

Can I get the Lattitude Longitute of the picture in the map?
26
votes
8answers
89k views

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 ...
3
votes
2answers
316 views

American FactFinder by ZIP code

I'm doing a research project that involves using demographic data collected from both the national Census and the American Community Surveys. I am interested in about 40 zip codes within NYC. The ...
2
votes
2answers
76 views

Finding out what geographies ACS 2015 5 year variables are reported at for use with Census API?

I'm trying to query the US Census 2015 5 year ACS API for certain variables at the block group level, but unfortunately not all variables/tables are reported at the block group level. How can I ...

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