Atchison County, Missouri
Atchison County, Missouri, has 5,175 residents (July 2025 estimate). Its county seat is Rock Port. It uses Central Time and covers 547 sq mi (1,417 km²) of land.
- Resident population, July 2025
- 5,175
- Land area
- 547 sq mi (1,417 km²)
- County seat or government
- Rock Port
- Time zone
- Central TimeUTC-06:00 in January; UTC-05:00 in July
- Median household income
- $58,750 ± $8,393
- Median home value
- $106,800 ± $5,805
- Median rent, with utilities
- $631 ± $54
- Homes lived in by their owners
- 76.8% ± 3.2 points
- County type
- County
- Metro or micro area
- Outside any metro or micro areaNext to: Maryville, MO micro area
- Water area
- 2.84 sq mi (7.36 km²)
- State
- Missouri
- County code (FIPS)
- 29005
- Coordinates (central point)
- 40.431846, -95.437555
These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.
Time zones in Atchison County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| Central TimeAmerica/Chicago | UTC-06:00 in January; UTC-05:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.
ZIP Code areas, largest first
- 644821,980 people
- 644911,638 people
- 516401,381 people
- 644461,066 people
- 64428609 people
- 64487572 people
- 64437561 people
- 64496224 people
- 64498221 people
9 ZIP Code areas overlap Atchison County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.
Official county information
We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
Townships in Atchison County, largest first
- Clay Township1,886 people
- Tarkio Township1,590 people
- Clark Township915 people
- Dale Township222 people
- Lincoln Township219 people
- Nishnabotna Township171 people
- Polk Township138 people
- Colfax Township30 people
- Buchanan Township16 people
- Benton Township0 people
- Templeton Township0 people
People counts are American Community Survey 2020–2024 5-year estimates. All townships in Missouri, by county
School districts in Atchison County, largest first
- Rock Port R-II School District2,219 people
- Tarkio R-I School District1,883 people
- Fairfax R-III School District1,085 people
Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.
Cities, towns and communities, largest first
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
- Tarkio, Missouri (city)1,471 people
- Rock Port, Missouri (city)1,221 people
- Fairfax, Missouri (city)702 people
- Westboro, Missouri (city)106 people
- Blanchard, Missouri (CDP)51 people
- Watson, Missouri (village)51 people
- Phelps City, Missouri (CDP)0 people
Bordering areas, nearest first
Distances are straight lines between map points.
- Nemaha County, Nebraska22 mi west
- Fremont County, Iowa23 mi north
- Holt County, Missouri26 mi southeast
- Page County, Iowa26 mi northeast
- Nodaway County, Missouri30 mi east
- Otoe County, Nebraska39 mi west
Before using this answer on a form
Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.
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