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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10 views

How to open .mdf file from HAZUS data to check its contents?

I want to work with HAZUS-MH (US tool for natural hazard modeling) data outside of HAZUS software. I do not have access to ESRI tools and cannot install HAZUS on my machine. So, I decided to use HAZUS ...
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1answer
50 views

Filtering demographic data for USA using TIGER/CENSUS data

I am working on Texas demographic data for a client. The ask is to collect demographic data for ZCTA areas of Texas state. I am looking for help in the source and linking demographic data for these ...
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1answer
45 views

What coordinate notation is this?

I have a shapefile with, for example, X_coords and Y_coords of 870058.5631 and 3226158.25 respectively. I want to convert these into decimal degrees in ArcGIS pro, but none of the input coordinate ...
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26 views

Points in shifted with different projected coordinate systems in same map

I am trying to map points on top of a map of Michigan taken from eBird a citizen science platform that records where birds were sighted. I downloaded an excel file for ebird sighting points, to use in ...
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1answer
49 views

Is there an Excel, Stata, MATLAB, R or Python program or online website that converts geo-coordinates to distance at large scale? [closed]

I have the geo-coordinates (latitude and longitude) for more than 1000 counties (in Excel) in the US, and I want to know their distances to a particular county with known geo-coordinate. Is there an ...
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1answer
52 views

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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3answers
67 views

Range of numbers for Township and Range

I am creating a GUI for input of PLSS data (Township, Range, Section). There will be 5 pull down or spinner components: Township, North/South, Range, East/West, Section The North/South component will ...
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29 views

Seeking shapefile of urban, suburban, and rural areas of US [closed]

I'm looking for something like this, doesn't have to be super accurate. I've tried searching for the source of that image but to no avail.
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1answer
33 views

Where can I purchase small scale high res raster imagery?

I am doing a personal project in my neighborhood that requires some georeferencing and as such I am looking for some sub-1m accuracy orthos with which to assist. The normal free sources such as USGS ...
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1answer
51 views

How to show Puerto Rico in “albersUsa” projection in Vega-Lite or Vega?

I have a shapefile that has all the US counties along with Puerto Rico and I want to visualize them in "albersUsa" projection using Vega or Vega-Lite. Problem is that in other projections, ...
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How to read *_LOW_HN / *_HIGH_HN fields in NY Street Centerline Data?

I've been looking at the NYC Street Centerline (CSCL), in particular number ranges for individual street segments. Quite a few look like this: ST_NAME L_LOW_HN L_HIGH_HN R_LOW_HN ...
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26 views

Identifying State Parks in the PAD-US dataset (Protected Areas Database)

I'm looking to map "State Parks," and I found this phenomenal, but complex database. Has anyone ever worked with the PAD datasets before? (or know any easier way to map State Parks?) In the PAD ...
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42 views

Choosing coordinate system for US East Coast Area in ArcMap

I'm currently doing a project where I need to use distance analysis (Analysis Tools -> Proximity -> Generate Near Table) to do a distance table. This is not the problem, but I'm having a hard time ...
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21 views

Where can I get a text file with the mapping of US states to a 2 or 3 digit zip code?

I found this map image online: I have also seen another image online which calls out some exceptions, but the image is too large to upload here. Is there anywhere I can download this information in ...
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2answers
71 views

Seeking PLSS Quarter of Quarter Sections in Oregon

I'm looking for a quarter of a quarter of a section (PLSS) which is 40 acres in size for the state of Oregon. I looked at several government and Oregon state web site and could not find it. The only ...
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1answer
81 views

Which map projection is suitable for distance measurement purpose in USA?

I'm developing an application which uses PostGIS functions for measurements in the USA. In nutshell: the software is running in a car and use PostGIS functions in real time. For example: to measure ...
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1answer
407 views

Converting xy point to lat/long

I have data with columns x,y, address. And no any information about the projection of x,y points. How can I convert these points to correct lat/long pairs? 1091969,199515,27 HEDGEWAY CT 1092046,...
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1answer
28 views

ACS Data Interpretation

I am working with ACS 5-Year Data at the block group level in ArcGIS, and was hoping someone could explain what one of the elements on my attribute table means. I know that the B00001e1 is some type ...
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0answers
25 views

Finding distances associated with change in latitude and longitude at given location [duplicate]

I am writing a program that uses GPS lat and long coordinates and a time change to determine speed with the output in units of m/s (precise to 0.1 m if feasible, but 1 m is sufficient). When ...
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1answer
39 views

US Census Bureau Shapefiles with district IDs

I am loading senate district polygon shapefiles from https://www.census.gov/cgi-bin/geo/shapefiles/index.php?year=2019&layergroup=State+Legislative+Districts into my Leaflet map. Well, to be ...
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1answer
335 views

Choosing CRS for Chicago, Illinois

I have data for Chicago, Illinois, that is in WGS84 CRS. I need to convert it to a metric projected CRS, and I've found several possible options: EPSG 3528 EPSG 6454 EPSG 2790 EPSG 26971 Among these,...
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1answer
999 views

Why is there no state with code “03” (among other missing numbers)?

The US census documentation for state codes is missing several numbers. For example, there is no state with code "03", "07" and others. Here is the start of the list... STATE|STUSAB|STATE_NAME|...
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1answer
180 views

Is the ESRI ArcGIS definition of California Albers projection using units of feet correct?

There is a map projection promulgated by the government of the state of California and recommended for use in certain state and municipal regulations. It is an Albers Equal Area projection with ...
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1answer
764 views

How many zip codes are in more than one state? [duplicate]

According to the accepted answer of Determining which US zipcodes map to more than one state or more than one city?, there are only 13 zip codes in two states. Reading down further on the page, ...
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1answer
23 views

2010 Block Group Income

Does anyone know why there isn't 2010 income data at the block group level on American Fact Finder? I don't see it at the census tract either. Looking for documentation explaining why it's not there ...
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Accessing past USDA NRCS data

I am constructing a panel that includes past crop yields, but I found that SDA/WSS/GDG only grant access to the current version(2019) of cross-sectional tabular data. Is it possible to access ...
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2answers
50 views

Seeking NRCS soil survey data at state or county scale?

Ideally, I would like to download all the NRCS's soil survey data for Pennsylvania, as is shown on Web Soil Survey. However, if it's not possible, I would like to at least get the data for Bradford ...
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1answer
116 views

Why does Google Maps display strange, jagged state boundaries in the Great Lakes?

When I search for a state on Google Maps, I am shown the state outlined in red. I've noticed that the states that border the Great Lakes have boundaries that protrude into the lakes in strange ways. ...
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227 views

Downloading Census data to PostgreSQL PostGIS TIGER extension for Amazon RDS database

Can someone point me toward instructions on how to download census data for the postGIS_tigerP_geocoder extension? I would like to use the geocode() function, but any query returns 0 results. From ...
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1answer
39 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 ...
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0answers
29 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 ...
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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 ...
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1answer
140 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 ...
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1answer
91 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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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 ...
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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 ...
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1answer
66 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 – ...
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1answer
319 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 ...
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1answer
66 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?
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2answers
246 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-...
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1answer
45 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
223 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-...
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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) ...
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1answer
68 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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1answer
70 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 ...
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1answer
78 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
389 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 ...
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3answers
961 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 ...
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1answer
309 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? ...
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2answers
385 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.

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