Washington city, Illinois
Official LSAD Designation: Washington city • Census GEOID: 1779033
• Tazewell County
Washington city is an incorporated city in Tazewell County, Illinois. According to official records from the Census (2025), Washington city had an estimated population of 15,902 residents. Official Census Bureau geographic records classify this community under LSAD designation Washington city (GEOID 1779033).
Local Government Administration U.S. Census Bureau GMAF
City Of Washington
Municipal
Official Title:
City Clerk
Address:
301 WALNUT ST, WASHINGTON IL 61571-2649
County Of Tazewell
County
Official Title:
Auditor
Address:
11 S 4TH ST STE 123, PEKIN IL 61554-4281
Civic & Statistical Snapshot
| Category | Estimate | Survey Period / Source |
|---|---|---|
| Total Population | 15,902 | 2025 |
| Median Household Income | $95,179 | 2020-2024 |
| Median Home Value | $221,900 | 2020-2024 |
| Land Area | 8.55 sq mi | Gazetteer (2026) |
| Civic & Public Services | Hospitals, Libraries, Colleges | CMS / IMLS / IPEDS |
| Schools & Districts | NCES Directory Listings | Provided by k12guides.com |
| Nearby Airports | Landing Facilities | Provided by airport-data.com |
| Climate & Weather | NOAA 30-Year Normals | 1991–2020 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).