Where does this data come from?

Name: Population — St. Clair, IL (persons)
Creator: U.S. Bureau of Economic Analysis (Regional Economic Accounts)

It is collected directly from U.S. Bureau of Economic Analysis (Regional Economic Accounts) and is available through the Makrognosis API under the code US-IL-17163.POP.A.NSA.

Population — St. Clair, IL (persons)

AnnualNot seasonally adjustedCode US-IL-17163.POP.A.NSA

Latest251,149 persons2024

Previous252,094 persons2023

Year ago252,094 persons2023

Population — St. Clair, IL (persons) was 251,149 persons in 2024, down 0.4% from 2023.

That is the lowest reading since the series began in 1969.

Over the past ten years it has ranged from 251,149 persons (2024) to 265,532 persons (2014), averaging 258,398 persons.

Population — St. Clair, IL (persons) (persons), 1969 – 2024. Source: U.S. Bureau of Economic Analysis (Regional Economic Accounts).

Showing the full history (downsampled for display). Open the interactive chart to zoom and switch transforms.

Recent data

Period	Value
2024	251,149 persons
2023	252,094 persons
2022	252,947 persons
2021	255,210 persons
2020	257,070 persons
2019	258,737 persons
2018	260,604 persons
2017	261,978 persons
2016	262,703 persons
2015	264,355 persons
2014	265,532 persons
2013	266,530 persons
2012	268,468 persons
2011	269,941 persons
2010	270,337 persons
2009	268,489 persons
2008	266,518 persons
2007	264,764 persons
2006	263,445 persons
2005	261,255 persons
2004	260,214 persons
2003	258,448 persons
2002	257,952 persons
2001	256,540 persons

Last 24 observations. The full history (56 observations) is available through the API.

Get Population — St. Clair, IL (persons) in your code or spreadsheet

One guessable code, agency-direct, updated on release. Free tier available.

curl -H "X-API-Key: $MAKROGNOSIS_KEY" \
  "https://makrognosis.robomacro.com/v1/series/US-IL-17163.POP.A.NSA"

# Python
import requests
r = requests.get("https://makrognosis.robomacro.com/v1/series/US-IL-17163.POP.A.NSA",
                 headers={"X-API-Key": KEY})
obs = r.json()["observations"]

Get a free API key → · API docs

About this series

Latest observation	2024
First observation	1969
Observations	56
Frequency	Annual
Units	persons
Adjustment	Not seasonally adjusted
10-year high	265,532 persons (2014)
10-year low	251,149 persons (2024)
10-year average	258,398 persons
Source agency	U.S. Bureau of Economic Analysis (Regional Economic Accounts)
Makrognosis code	US-IL-17163.POP.A.NSA

This series is a labelled reference series (an official figure republished by an aggregator) rather than a first print from the agency itself.

Other United States indicators

Unemployment Rate: St. Clair County, IL (U)Employment: St. Clair County, IL (U)Labor Force: St. Clair County, IL (U)Per-Capita Personal Income — St. Clair, IL (USD)Personal Income — St. Clair, IL (USD thousands)Unemployment: St. Clair County, IL (U)

National figure

United States Population, midperiod

FAQ

Where does this data come from?: It is collected directly from U.S. Bureau of Economic Analysis (Regional Economic Accounts) and is available through the Makrognosis API under the code US-IL-17163.POP.A.NSA.

Last updated 2026-07-12. Source: U.S. Bureau of Economic Analysis (Regional Economic Accounts). Original title: “Population — St. Clair, IL (persons)”.