Application Ideas

High Risk/Vulnerable Individuals

To help local governments better plan for disaster recovery for their residents, it would helpful to know which areas contained high risk/vulnerable individuals. These individuals might include the elderly, small children, disabled individuals, those who are language isolated, and those who do not have access to a vehicle. Creation of heat maps, or other visualizations of these populations can help emergency management ...more »

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Using Data

Problem with List of State Codes and Zip Code Search

I'm trying to retrieve the population for a certain zip code. What I found in your online documentation is that I should use the following URL string: http://api.census.gov/data/2010/sf1?key=(key)&get=P0010001&for=zip+code+tabulation+area:(zip)&in=state:(state) ...where (key) is my API key, (zip) is the zip code, and (state) is a two digit code that you use to identify states. The problem that I run into is that I ...more »

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Application Showcase

New Android App Census US

Hello, Just wanted to let you know that I've just published an android tablet app to the Google Play Store: CensusUS at https://play.google.com/store/apps/details?id=com.clcassidy.censusus. The app uses the Census APIs combined with Google Maps v2. By tapping on the map and the navigation menus on the tablet, users are able to select locations at all levels of geography, from the national down to the tract level, and ...more »

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Application Showcase

Poverty map by age and sex

http://pad.human.cornell.edu/Unlisted/uncertaintymap_fullinfo_api_B17001.cfm

I had already created a thematic map application that gave information about the uncertainty surrounding ACS estimates (move your mouse over the counties). This website generates the map using API data requests. A future expansion will include parsing the variables XML file.

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Application Ideas

Startup

This app provides entrepreneurs granular data to help them choose the location for a new business based on local population characteristics and existing businesses. In its first iteration, Startup will provide results based on a limited set of location-based criteria: • Number of related businesses per capita • Population • Median income Startup asks the user to enter a zip code, and to choose a business from a list ...more »

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Bugs / Problems

Not receiving any email in response to api key request

Over the last two days, I submitted a request for an Census API key at

http://www.census.gov/developers/tos/key_request.html

The website says to expect an email after a few minutes, but I've never received any email about how to activate an API key. (Yes, I've checked my spam folder.)

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Using Data

List of all Legislature District "names"

I need a list of all the states' legislature's district names. I will use this list as the definitive list of district names that data is mapped to. I tried to use the " Census Name Lookup Tables" found here: https://www.census.gov/geo/maps-data/data/nlt.html but there are many district names that don't map properly to the district names returned by the 2012-5yr-ACS API. So, for example, if I submit the query: http://api.census.gov/data/2012/acs5?get=B19301_001E&for=state+legislative+district+(lower+chamber):*&in=state:50 ...more »

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API Technical Discussions

Access Micro-data for Blocks

I'm working on a school project with 2010 Census data. Currently, we are getting tract-level data using codes from http://api.census.gov/data/2010/sf1/variables.json to get data. For example, to find the white 65-year old males in a county's tracts, we make the API call: http://api.census.gov/data/2010/sf1?key=[key]&get=PCT012I068,NAME&for=tract:*&in=state:08+county:059 However, when making the same call at a block ...more »

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Application Ideas

Tell Me About this Area

This app uses the American Community Survey data to provide users with a quick overview of the demographics, social, economic, and housing statistics of the geographic area that a user is passing through. The application uses a mobile phone’s GPS to determine the user’s geographic location and displays data based on the location. The application would display facts about the community from the Community Facts pages ...more »

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API Technical Discussions

How to decode the Variables?

I am looking at the examples of Request URL examples. I am wondering if the Variables follow any structure and if so were I can learn about it. In another words, can those variables be interpreted to what data is requested? If so, is there a document that describe it? Are the letters in the front has any significance/rules, and are the following digits follow any rules? P012D007, B02001_001E, PCT012A015 etc.... ...more »

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Application Showcase

acs package in R

Working with the Puget Sound Regional Council, I've modified my acs package for R to allow users to download data directly from the Census ACS API. See http://eglenn.scripts.mit.edu/citystate/2013/02/major-improvements-to-acs-r-sneak-peak-at-version-1-0/ for more info and user guide. Features and improvements include: * The package is now capable of downloading data directly from the new Census American Community ...more »

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Application Showcase

CensusConnect

Hey All,

just wanted show off my usage of the Census API.. I am using the census data to show off surrounding block census data around each address on real estate listings. Pretty cool. Thanks for Census Developer API for doing such a great job to make this possible. Check it out:

http://www.census-connect.com

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Bugs / Problems

"Get" argument for API call: is there a length limitation?

I have an API request where the get argument that works is "P0030001,P0030002,P0030003,P0030004". However, I wanted to get all available names in that concept, which in total is a list of 8 elements "P0030001,P0030002,P0030003,...P0030008".

This request fails with error "unknown variable 'P0030005,P0030006,P0030007,P0030008"

Is there a limit on the length for the GET argument?

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Displaying 1 - 25 of 288 Ideas