Adams County, Illinois ZIP codes
17 ZIP codes are in Adams County, plus 7 that cross in from neighboring counties. It's part of the Quincy, IL-MO micro area.
- ZIP codes
- 17
- Population in these ZIPs
- 64,474
- Avg. median income
- $66,600population-weighted
- Cities & towns
- 15
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Adams County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 62301 | Quincy | 30,746 | $52,055 | $141,700 |
| 62305 | Quincy | 19,036 | $83,598 | $261,500 |
| 62306 PO Box | Quincy | — | — | — |
| 62320 | Camp Point | 2,667 | $77,143 | $205,900 |
| 62324 | Clayton | 1,196 | $76,903 | $169,900 |
| 62325 | Coatsburg | 465 | $75,469 | $154,900 |
| 62338 | Fowler | 1,075 | $91,473 | $236,800 |
| 62339 | Golden | 970 | $62,422 | $125,700 |
| 62346 | La Prairie | 164 | — | $126,700 |
| 62347 | Liberty | 1,977 | $93,810 | $241,500 |
| 62348 | Lima | 204 | $77,969 | $87,500 |
| 62349 | Loraine | 517 | $67,981 | $87,700 |
| 62351 | Mendon | 1,928 | $77,298 | $208,600 |
| 62359 | Paloma | 184 | $51,413 | — |
| 62360 | Payson | 1,605 | $54,706 | $168,000 |
| 62365 | Plainville | 464 | $90,833 | $162,500 |
| 62376 | Ursa | 1,276 | $57,778 | $192,500 |
ZIP codes partly in Adams County
These ZIP codes are mostly in a neighboring county but cover part of Adams County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 62311 | Augusta | Hancock County | 872 | $47,794 | $101,100 |
| 62312 | Barry | Pike County | 1,931 | $68,571 | $112,500 |
| 62314 | Baylis | Pike County | 530 | $75,556 | $126,700 |
| 62316 | Bowen | Hancock County | 705 | $61,094 | $84,000 |
| 62343 | Hull | Pike County | 611 | $61,322 | $96,400 |
| 62373 | Sutter | Hancock County | 225 | $110,568 | $139,900 |
| 62379 | Warsaw | Hancock County | 1,854 | $62,200 | $115,300 |
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
Cities and towns in Adams County
Nearby counties
Frequently asked questions
How many ZIP codes are in Adams County, Illinois?
17 ZIP codes are mainly in Adams County, and 7 more ZIP codes from neighboring areas reach partly into it.
What cities are in Adams County?
ZIP codes in Adams County use the city names Camp Point, Clayton, Coatsburg, Fowler, Golden, La Prairie, Liberty, Lima, Loraine, Mendon, Paloma and Payson and others.
What metro area is Adams County in?
Adams County is part of the Quincy, IL-MO micropolitan statistical area.