Decatur, IL metro area ZIP codes
The Decatur, IL metropolitan statistical area (CBSA 19500) covers 1 county in Illinois and 18 ZIP codes.
- ZIP codes
- 18
- Population
- 101,120
- Avg. median income
- $64,800population-weighted
- Counties
- 1
Click anywhere on the map to see which ZIP code it's in.
Counties in the Decatur, IL area
ZIP codes in the Decatur, IL area
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 61756 | Maroa | Macon County | 2,542 | $86,375 | $159,400 |
| 61925 | Dalton City | Macon County | 1,182 | $81,316 | $205,000 |
| 62501 | Argenta | Macon County | 2,324 | $95,889 | $196,800 |
| 62514 | Boody | Macon County | 297 | $53,333 | $103,100 |
| 62521 | Decatur | Macon County | 32,665 | $66,337 | $121,300 |
| 62522 | Decatur | Macon County | 15,185 | $50,669 | $89,700 |
| 62523 | Decatur | Macon County | 707 | $13,393 | — |
| 62524 PO Box | Decatur | Macon County | — | — | — |
| 62525 PO Box | Decatur | Macon County | — | — | — |
| 62526 | Decatur | Macon County | 30,483 | $49,062 | $98,600 |
| 62532 | Elwin | Macon County | 40 | — | $122,200 |
| 62535 | Forsyth | Macon County | 3,502 | $112,000 | $314,800 |
| 62537 | Harristown | Macon County | 272 | $70,455 | $87,500 |
| 62544 | Macon | Macon County | 1,668 | $89,167 | $152,300 |
| 62549 | Mt Zion | Macon County | 6,454 | $100,566 | $200,500 |
| 62551 | Niantic | Macon County | 820 | $69,583 | $135,800 |
| 62554 | Oreana | Macon County | 1,832 | $95,625 | $180,300 |
| 62573 | Warrensburg | Macon County | 1,147 | $94,583 | $170,800 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Frequently asked questions
How many ZIP codes are in the Decatur, IL metro area?
18 ZIP codes, based on each ZIP code's main county.
Which counties make up the Decatur, IL area?
Macon County.
What is an MSA?
A metropolitan statistical area (MSA) is a core city of 50,000+ people plus the surrounding counties tied to it by commuting, as defined by the U.S. Office of Management and Budget. Micropolitan areas have a core of 10,000–50,000. Together they are called core-based statistical areas (CBSAs).