Adams County, IL ZIP codes
Adams County ZIP codes by town
Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.
Map of Adams County ZIP codes
The ZIP codes of Adams County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.
Adams County in numbers
About 64,754 people live in Adams County, in 27,915 households, the 23rd most populous of Illinois's 102 counties. The median household income is $66,220 a year, 21% below the Illinois median of $83,390 (US: $80,734). The median owner-occupied home is valued at $162,600 (38% below the Illinois median), and median gross rent is $828 a month. The median age is 41.4; 27.5% of adults 25 and over hold a bachelor's degree or higher (37.8% across Illinois); the average commute takes 17 minutes.
| Population | 64,754 |
|---|---|
| Households | 27,915 |
| Median age | 41.4 |
| Median household income | $66,220 |
| Median home value | $162,600 |
| Median gross rent | $828 |
| Bachelor's degree or higher | 27.5% |
| Mean commute | 16.9 min |
| Population density | 76 / sq mi |
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.
Largest towns in Adams County
| Town | ZIP codes | Population |
|---|---|---|
| Quincy | 3 | 39,109 |
| Camp Point | 1 | 1,230 |
| Mendon | 1 | 1,167 |
| Payson | 1 | 1,100 |
| Ursa | 1 | 726 |
| Golden | 1 | 693 |
| Clayton | 1 | 602 |
| Liberty | 1 | 409 |
| Loraine | 1 | 341 |
| Lima | 1 | 224 |
| Coatsburg | 1 | 209 |
| Plainville | 1 | 183 |
| Paloma | 1 | 161 |
| La Prairie | 1 | 48 |
| Fowler | 1 | 32 |
Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.
Neighbouring counties
Counties that share a ZIP code with Adams County.
Not sure you are in Adams County? What county am I in? answers from your location, near a county line included.
Every ZIP code in Adams County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
62301 | Quincy , IL | Standard | 30,746 | $52,055 | $135,100 |
62305 | Quincy , IL | Standard | 19,036 | $83,598 | $213,600 |
62306 | Quincy , IL | No street area | — | — | — |
62320 | Camp Point , IL | Standard | 2,667 | $77,143 | $167,400 |
62324 | Clayton , IL | Standard | 1,196 | $76,903 | $96,600 |
62325 | Coatsburg , IL | Standard | 465 | $75,469 | $154,900 |
62338 | Fowler , IL | Standard | 1,075 | $91,473 | $226,800 |
62339 | Golden , IL | Standard | 970 | $62,422 | $125,700 |
62346 | La Prairie , IL | Standard | 164 | — | $126,700 |
62347 | Liberty , IL | Standard | 1,977 | $93,810 | $225,900 |
62348 | Lima , IL | Standard | 204 | $77,969 | $87,500 |
62349 | Loraine , IL | Standard | 517 | $67,981 | $87,700 |
62351 | Mendon , IL | Standard | 1,928 | $77,298 | $147,800 |
62359 | Paloma , IL | Standard | 184 | $51,413 | — |
62360 | Payson , IL | Standard | 1,605 | $54,706 | $147,500 |
62365 | Plainville , IL | Standard | 464 | $90,833 | $162,500 |
62376 | Ursa , IL | Standard | 1,276 | $57,778 | $178,000 |
Cite this page
zipcodes.pro. “Adams County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/il/county/adams
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