Linn County, KS ZIP codes
There are 7 ZIP codes in Linn County, KS, in 7 towns, from 66010 to 66767. The largest are 66040 (Lacygne), 66075 (Pleasanton) and 66056 (Mound City).
The county seat is Mound City.
- ZIP codes
- 7
- Towns
- 7
- County seat
- Mound City
- County FIPS
20107- State
- Kansas
- Population
- 9,767
- Median household income
- $59,069
- Land area
- 594 sq mi
- Area code
- 913
- Metro area
- Kansas City
Linn County ZIP codes by town
- Mound City (county seat)
- 66056
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 Linn County ZIP codes
The ZIP codes of Linn 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.
Linn County in numbers
About 9,767 people live in Linn County, in 4,348 households, the 40th most populous of Kansas's 105 counties. The median household income is $59,069 a year, 20% below the Kansas median of $74,275 (US: $80,734). The median owner-occupied home is valued at $173,600 (20% below the Kansas median), and median gross rent is $691 a month. The median age is 45.7; 22.7% of adults 25 and over hold a bachelor's degree or higher (35.6% across Kansas); the average commute takes 35 minutes.
| Population | 9,767 |
|---|---|
| Households | 4,348 |
| Median age | 45.7 |
| Median household income | $59,069 |
| Median home value | $173,600 |
| Median gross rent | $691 |
| Bachelor's degree or higher | 22.7% |
| Mean commute | 34.7 min |
| Population density | 16 / 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 Linn County
| Town | ZIP codes | Population |
|---|---|---|
| Lacygne | 1 | 3,651 |
| Pleasanton | 1 | 1,516 |
| Mound City | 1 | 768 |
| Centerville | 1 | 599 |
| Prescott | 1 | 276 |
| Parker | 1 | 274 |
| Blue Mound | 1 | 234 |
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 Linn County.
Not sure you are in Linn County? What county am I in? answers from your location, near a county line included.
Every ZIP code in Linn County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
66010 | Blue Mound , KS | Standard | 626 | $44,318 | $157,800 |
66014 | Centerville , KS | Standard | 599 | $105,431 | — |
66040 | Lacygne , KS | Standard | 3,651 | $56,323 | $174,300 |
66056 | Mound City , KS | Standard | 1,383 | $57,813 | $163,200 |
66072 | Parker , KS | Standard | 1,211 | $101,875 | $296,800 |
66075 | Pleasanton , KS | Standard | 2,497 | $62,407 | $152,700 |
66767 | Prescott , KS | Standard | 374 | $46,635 | $104,800 |
Cite this page
zipcodes.pro. “Linn County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/ks/county/linn
Underlying data is public domain or openly licensed — sources, vintages and licences.