Where does this data come from?

Name: Population — Cass, 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-17017.POP.A.NSA.

Population — Cass, IL (persons)

AnnualNot seasonally adjustedCode US-IL-17017.POP.A.NSA

Latest12,713 persons2024

Previous12,779 persons2023

Year ago12,779 persons2023

Population — Cass, IL (persons) was 12,713 persons in 2024, down 0.5% from 2023.

That is the lowest reading since 2022.

Over the past ten years it has ranged from 12,672 persons (2022) to 13,519 persons (2014), averaging 13,067 persons.

Population — Cass, 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	12,713 persons
2023	12,779 persons
2022	12,672 persons
2021	12,778 persons
2020	12,976 persons
2019	13,099 persons
2018	13,208 persons
2017	13,276 persons
2016	13,325 persons
2015	13,387 persons
2014	13,519 persons
2013	13,629 persons
2012	13,660 persons
2011	13,754 persons
2010	13,658 persons
2009	13,623 persons
2008	13,660 persons
2007	13,699 persons
2006	13,611 persons
2005	13,670 persons
2004	13,640 persons
2003	13,674 persons
2002	13,549 persons
2001	13,677 persons

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

Get Population — Cass, 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-17017.POP.A.NSA"

# Python
import requests
r = requests.get("https://makrognosis.robomacro.com/v1/series/US-IL-17017.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	13,519 persons (2014)
10-year low	12,672 persons (2022)
10-year average	13,067 persons
Source agency	U.S. Bureau of Economic Analysis (Regional Economic Accounts)
Makrognosis code	US-IL-17017.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: Cass County, IL (U)Employment: Cass County, IL (U)Labor Force: Cass County, IL (U)Per-Capita Personal Income — Cass, IL (USD)Personal Income — Cass, IL (USD thousands)Unemployment: Cass 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-17017.POP.A.NSA.

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