Using Data

Trying to understand the Zip Code issue

Community Member kudos icon + Community member
Please bear with me, I'm new to this.

I have been looking for a way to get Zip+4 demographics. The Census position is that they don't provide that but they point to the shapefiles.

I have 2 questions:
1. Can someone simplify whether or not these shapefiles are useful or if the data I want is simply not available here? Example: what is the Male-Female ratio in 68198-9550?

2. What are other companies offering when... more »

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Using Data

Comparing ACS data from year to year

Now that 2007-2011 ACS 5 year data is available in the API, please see this guidance on comparing ACS data.

http://www.census.gov/acs/www/guidance_for_data_users/comparing_data/

From the page:

The Census Bureau recommends that you:

DO compare estimates from non-overlapping periods, for example, compare a 2005-2007 ACS 3-year estimate to a 2008-2010 ACS 3-year estimate.

DON'T compare overlapping periods, for example,... more »

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Using Data

Zip/County/City Radius Tool trending idea

Community Member kudos icon + Community member

We are trying to create a tool where a user would:

1) Enter in their "home" zip code

2) Enter in a radius in miles

3) Hit an "Update" button.

 

Once the user hit the Update button, the screen would show all zip codes, all cities and all counties within the specified number of miles from the home zip code. Can these Census tools be used to create such a system?

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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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Using Data

2000 SF Census data

Hi,

 

Great job on the API!! It is very fast, and very easy to use. I am a developer, and know how hard it is to write programs that scale.. and you seem to have done a great job..

 

Just a quick question, I'm curious. I was wondering if you planned on releasing the 2000 SF Census data as well through the API? if so, do you have a target date for this?

 

Thanks

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Using Data

Problem in Virginia Data

Using the SF1 api, when I loop through the counties in Virginia, it finishes the county loop and then begins a loop through cities. I noticed it while running a nested loop for the entire US. Virginia was the only state that I noticed doing this, though there could be others.

Here's the URL I'm using that generates this list of counties + cities.
http://api.census.gov/data/2010/sf1?key={ikey}&get=NAME&for=county:*&in=state:51... more »

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Using Data

Best practice for census tract level GeoID

I am trying to make tract-level thematic maps for several indicators (e.g. unemployment, median family income etc.).

In the KML and SVG files I am using (including that obtained from TIGER) the 11 digit GeoID10 seems to be the best column through which I can merge data pertaining to the census tracts either by using the "GEO.id2" field from ACS data downloaded as CSV from FactFinder or through a concatenation of... more »

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Using Data

Census Data Acquisition from Boundary Files

Community Member kudos icon + Community member
On this site:

https://sites.google.com/site/stephaniesmullen/google-map-examples/census-data-acquisition

the author uses census boundary files to get coordinates of points that make up the boundary of a polygon.

When I tried to do the same thing with boundary files of block groups from the 2010 census for California. One of the files contents was in hex format and the block groups arrangement of polygon data... more »

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Using Data

gender by zip code

Community Member kudos icon + Community member
I'm attempting to write some Python code to retrieve this information. I only have a little experience with APIs, and I'm kind of lost.

import requests

query_params = { 'apikey': 'mykey',
'place': , #would like to select all
'state': # would like to select all
#probably need one for ZCTAs?
}

# PO120001 - PO120049 all sex by age categories... more »

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Using Data

API Query Dissection

A dissection of the API query string for the Census API
I have posted this in another topic, however it is hard to find.

Host name, API sub-folder (this triggers our api to parse the following data).

http://api.census.gov/data/

This portion refers to the DataSet/Instance pair (without both, it's difficult to determine what number you want back)

2010/sf1?

This determines what variables to retrieve (required,... more »

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Using Data

Census Data for Federal Grants

Community Member kudos icon + Community member

Many federal grants require applicants to supply Census data when responding to RFPs. Allow agencies to create a report template in AFF for applicants. This would allow for applicants to enter an address and get centroid data that was predefined by the agency. Applicants could downloaded the table in PDF form efficiently with all the available data the federal agency requires.

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Using Data

Combining ACS Data with Crime Data

In order to understand how crime or criminal elements are embedded within different communities, it may be useful to combine neighborhood crime data with ACS demographic and housing data. There are hotspots in most cities that could be objectively analyzed to reveal patterns which may be disrupted by governmental policy. That is, if the data clearly points to consistent reliable trends.

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