Postal reference / United States

61854Mansfield, Illinois

ZIP code 61854 is a United States postal code for Mansfield, Illinois. Its county association is Piatt County. The map reference point is at 40.2147, -88.5179.

State / territory
Illinois
Recorded place name
Mansfield
County association
Piatt
Estimated coordinate
40.2147, -88.5179
View on OpenStreetMap
ZIP prefix
618 · 62 ZIP codes share it
Data source
GeoNames postal reference, snapshot September 26, 2026

GeoNames reference data. County associations may not include every intersecting county, place names are postal names rather than legal boundaries, and coordinates are approximate. This is not address validation.

Area

Land area
56.379 sq mi (2023 Census Gazetteer)

Figures are for the ZIP Code Tabulation Area (ZCTA) that most closely matches this ZIP code, not an exact match to USPS delivery boundaries. Source: U.S. Census Bureau, 2023 Gazetteer + 2023 ACS 5-Year Estimates, retrieved 2026-09-27. How to read this data.

Need the last four digits?

ZIP+4 depends on the full delivery address. A five-digit code alone cannot determine its extension.

Find ZIP+4

Explore Illinois

Browse the other 1,574 ZIP codes recorded for Illinois, sorted by code with place and county.

Illinois directory

Nearby ZIP code reference points

ZIP codePlaceStateCounty associationMiles
61853MahometILChampaign6.7
61884White HeathILPiatt7.9
61842Farmer CityILDe Witt8.0
61724BellflowerILMcLean8.7
61875SeymourILChampaign8.9
61839De LandILPiatt9.6
61843FisherILChampaign10.3
61815BondvilleILChampaign10.5

Straight-line distance between reference points. Nearby points do not prove that ZIP areas touch.

Verify a mailing address

For mailing, confirm the complete street or PO Box address with USPS. A place record does not confirm delivery eligibility or the ZIP+4 extension.

Open USPS address lookup