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City ZIP codes · Illinois

Decatur, IL ZIP Codes

6 ZIP codes use the postal name Decatur, Illinois (Census 2020 ZCTAs and GeoNames postal codes, October 2026): 4 residential and 2 for PO boxes or a single organization. Median household income runs from $49,062 in 62526 to $66,337 in 62521, 1.4 times as much (Census Bureau, ACS 2020-2024). Decatur's most populous ZIP code is 62521, with 32,665 people (ACS 2020-2024); 27% of its land is in the city of Decatur.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are Decatur's ZIP codes?

62521: $66k median household income62522: $51k median household income62523: $13k median household income62526: $49k median household income62521625266252262521: $66k median household income62522: $51k median household income62523: $13k median household income62526: $49k median household income62521625266252262521: $66k median household income62522: $51k median household income62523: $13k median household income62526: $49k median household income625216252662522
The 4 residential ZIP codes named Decatur, shaded by median household income in national fifths (ACS 2020-2024). Select a ZIP to open it. <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are Decatur's ZIP codes?

The highest median household income is in 62521 ($66,337), the lowest in 62526 ($49,062). Home values run from $95,100 in 62526 to $125,100 in 62521.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013, B25077, B01003).

All 4 residential ZIP codes of Decatur

Residential ZIP codes with the postal name Decatur, IL, largest first (ACS 2020-2024); sort by any column
County
62521 Macon County 32,665 495 $66k $125k
62526 Macon County 30,483 462 $49k $95k
62522 Macon County 15,185 634 $51k $114k
62523 Macon County 707 1,582 $13k –

Download the 6 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; 2023 Gazetteer land areas (2020 ZCTAs); town names from simplemaps US ZIP Codes (CC BY 4.0) and GeoNames (CC BY 4.0).

PO Box and single-organization ZIP codes in Decatur

2 ZIP codes named Decatur have no residential delivery area: post office boxes, or one organization (a large employer, an agency, a university) with its own code. The Census Bureau publishes no figures for them.

Decatur, IL: ZIP codes without a residential area, for PO boxes or one organization (GeoNames postal codes; USPS does not publish openly which is which)
ZIPCounty
62524Macon County
62525Macon County

Source: GeoNames postal codes (CC BY 4.0); a ZIP code with no Census ZCTA has no residential delivery area.

Which counties do Decatur's ZIP codes reach?

Decatur's residential ZIP codes lie in Macon County.

Which places do Decatur's ZIP codes cover?

A postal name is not a city limit. By the Census Bureau's places, Decatur's residential ZIP codes cover Decatur itself and 2 other places, each listed with the ZIP codes that have at least 5% of their land in it or hold most of the place:

Source: U.S. Census Bureau, 2020 ZCTA-to-place relationship file (shares of land).

Which first three digits do Decatur's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Decatur starts with 625.

Three-digit prefixes of Decatur's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Decatur's
PrefixSectional centerHereAll codes
625 Springfield, IL (SCF 625) 6 53

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.