I am trying to find out, on a state-by-state (city/county as well, if possible) basis, what the population makeup is based on ancestry/ethnicity (i.e. Polish). For example, "what percentage of the population of Illinois in 2020 was of Polish ancestry?"

However, I have only been able to find this data at a national level. I can see that sites such as statisticalatlas.com have the information I'm looking for and cite Census.gov as being where they got it. But I need to cite an official government source for what I'm doing and I haven't been able to find the exact census product which they are citing for state level data.

Can anyone help?

  • What have you found at census.gov?
    – phoog
    May 24, 2022 at 20:52
  • The statistics I need, but only zoomed out - the percentage of nationwide population with given ethnic or national ancestry.
    – Dave
    May 24, 2022 at 20:55
  • Did you look at the 2010 data? I think I've seen what you are looking for, so I wonder whether the relevant data from 2020 are still in preparation.
    – phoog
    May 24, 2022 at 20:57
  • 1
    I was looking for any data. I wasn't able to find this data for any year, 1990, 2000, 2010... I guess the problem is that I'm really not sure how to navigate Census.gov. Other than using the search bar and putting in "ancestry by state" or similar searches....
    – Dave
    May 25, 2022 at 13:40

2 Answers 2


The page you are looking for (if you want all the data for all states and ancestries is


To find it, go to https://data.census.gov/cedsci/table and, in the left column, select Geography -> State and Topics -> Populations and People/ Ancestry/ Select Ancestry

Then, in the right column, click on "American Community Survey" and select the year you want to see.

It probably makes sense to select only a single state and ancestry at a time, as otherwise the table will be very large - you get a crosstabulation with all the other demographics criteria from that survey.


You can either view the data table (as ccprog explains), or view the state "Profile".

To do that, visit https://data.census.gov/cedsci/, click the "Map" link, which will take you to an interactive map. From there, you can click on a state, then select "View Profile".

Each state's profile includes a section for "Ancestry" information, near the top of the page.

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