I am using an API (To get crimes in city ) where I have found a field entitled "Census Tract Number" and am getting data formatted with (longitude, latitude, census tract number). What does this last field represent? Is there any way to find these "census tract numbers"? For example, for the value "census tract= 8100.2010", where can I find data about that census tract number?
The results I receive are:
Nb_census_tract = census_tract_of_address("200 N State Chicago IL 60601")
I found this definition:
Census Tract: The census is conducted by the US Census Bureau every 10 years. It identifies certain geographic areas by census tract and census block. The census track reflects median numbers when it comes to age and income. It is a generalization about a specific area, not by any means an exact science or number.
I tried to load the shape file in Postgis, and I found census tract data on the official website, but it's not specific to every block/building in the city (I found something like: Poverty rate in city, ...) and most of data are older then 2010. Then, I tried another approach--I found a service where it shows census information (even in 2014, although I couldn't find the dataset in the official website). But this service gives you information from an address. I don't want to do geocoding as it takes time and my data is huge.
As far as I know Decennial Census are the data where you can only get fundamental demographic and housing data. I tried to explore this API, but it works by getting lat/long, but in my case I have polygons.
I thought about getting the center of the polygon, but it's not effective.
My questions are:
Where can I find data by "census tract numbers", for example:
Longitude: -122.338906797 latitude: 47.609284041 census tract number = 8100.2010
Can I find updated census tract data (as far as I know, all data is before 2010)?