Franklin County, Kansas ZIP codes
8 ZIP codes are in Franklin County, plus 5 that cross in from neighboring counties. It's part of the Ottawa, KS micro area.
- ZIP codes
- 8
- Population in these ZIPs
- 27,146
- Avg. median income
- $78,100population-weighted
- Cities & towns
- 8
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Franklin County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 66042 | Lane | 929 | $67,813 | $295,800 |
| 66067 | Ottawa | 16,330 | $77,255 | $240,300 |
| 66076 | Pomona | 2,416 | $73,945 | $287,700 |
| 66078 | Princeton | 805 | $80,000 | $343,200 |
| 66079 | Rantoul | 752 | $54,432 | $349,600 |
| 66080 | Richmond | 980 | $90,543 | $230,900 |
| 66092 | Wellsville | 4,351 | $87,524 | $348,800 |
| 66095 | Williamsburg | 583 | $71,023 | $274,500 |
ZIP codes partly in Franklin County
These ZIP codes are mostly in a neighboring county but cover part of Franklin County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 66006 | Baldwin City | Douglas County | 8,013 | $80,960 | $365,800 |
| 66033 | Greeley | Anderson County | 672 | $91,540 | $222,100 |
| 66064 | Osawatomie | Miami County | 5,992 | $67,321 | $199,600 |
| 66524 | Overbrook | Osage County | 2,473 | $84,375 | $272,100 |
| 66528 | Quenemo | Osage County | 761 | $73,472 | $210,500 |
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 Franklin County
Nearby counties
Frequently asked questions
How many ZIP codes are in Franklin County, Kansas?
8 ZIP codes are mainly in Franklin County, and 5 more ZIP codes from neighboring areas reach partly into it.
What cities are in Franklin County?
ZIP codes in Franklin County use the city names Lane, Ottawa, Pomona, Princeton, Rantoul, Richmond, Wellsville and Williamsburg.
What metro area is Franklin County in?
Franklin County is part of the Ottawa, KS micropolitan statistical area.