Where does this data come from?

Name: Population — Washington, 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-17189.POP.A.NSA.

Population — Washington, IL (persons)

AnnualNot seasonally adjustedCode US-IL-17189.POP.A.NSA

Latest13,535 persons2024

Previous13,570 persons2023

Year ago13,570 persons2023

Population — Washington, IL (persons) was 13,535 persons in 2024, down 0.3% from 2023.

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

Over the past ten years it has ranged from 13,535 persons (2024) to 14,366 persons (2014), averaging 13,876 persons.

Population — Washington, 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	13,535 persons
2023	13,570 persons
2022	13,650 persons
2021	13,651 persons
2020	13,731 persons
2019	13,876 persons
2018	13,965 persons
2017	13,921 persons
2016	14,143 persons
2015	14,231 persons
2014	14,366 persons
2013	14,394 persons
2012	14,586 persons
2011	14,567 persons
2010	14,709 persons
2009	14,755 persons
2008	14,855 persons
2007	14,890 persons
2006	15,008 persons
2005	14,950 persons
2004	15,106 persons
2003	15,189 persons
2002	15,129 persons
2001	15,258 persons

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

Get Population — Washington, 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-17189.POP.A.NSA"

# Python
import requests
r = requests.get("https://makrognosis.robomacro.com/v1/series/US-IL-17189.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	14,366 persons (2014)
10-year low	13,535 persons (2024)
10-year average	13,876 persons
Source agency	U.S. Bureau of Economic Analysis (Regional Economic Accounts)
Makrognosis code	US-IL-17189.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: Washington County, IL (U)Employment: Washington County, IL (U)Labor Force: Washington County, IL (U)Per-Capita Personal Income — Washington, IL (USD)Personal Income — Washington, IL (USD thousands)Unemployment: Washington 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-17189.POP.A.NSA.

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