Iowa · Census place 1939450
Jefferson, Iowa
Jefferson is a city in Greene County, Iowa with an estimated 4,148 residents on July 1, 2024. It is the 101st largest of 273 incorporated places of 1,000+ people in the state.
- Population 2024
- 4,148
- #101 of 273 in Iowa
- Change since 2020
- -0.7%
- -30 people
- Land area
- 6.0 sq mi
- + 0.05 sq mi water
- Density
- 689 / sq mi
- State median 1,363
Measure from here
Tools and pages that start from Jefferson
Jefferson population, 2020 to 2024
Jefferson lost 30 residents from July 2020 to July 2024, a change of -0.7%. In the latest year it moved by +45.
Jefferson covers 6.02 square miles of land and 0.05 of water, for 689 people per square mile of land. The median Iowa place of 5,000+ has 1,363, so Jefferson is less dense than the typical town.
What county Jefferson is in
All of Jefferson's residents live in Greene County, which had 8,662 residents in 2024. Jefferson holds 47.9% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.
ZIP codes in Jefferson
1 ZIP Code Tabulation Area (ZCTA) overlaps Jefferson by at least 10% of the ZCTA's or the city's land: 50129. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.
Where Jefferson is
The Census internal point of Jefferson is at 42.017700, -94.379400. Des Moines, the capital, is 49.6 miles SE in a straight line. The nearest larger place is Perry, IA (8,046 people), 19.3 miles away. The nearest city of 100,000 or more is Des Moines, IA, 50.1 miles away.
Internal point
- Decimal
- 42.017700, -94.379400
- DMS
- 42°01'3.72"N 94°22'45.84"W
- UTM
- 15N 385791.9E 4652661.8N
- Geohash
- 9zkzh354b
- Plus code
- 86J72J9C+36
Daylight in Jefferson
At 42.02° N, Jefferson gets about 15 h 15 min of daylight around the June solstice and 9 h 07 min around the December solstice, a swing of 6 h 08 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.
Places near Jefferson
The eight nearest incorporated places of 1,000+ in Iowa, measured between internal points. The closest is Glidden, 18.0 miles away, with 1,140 people.
Questions people ask
What is the population of Jefferson, IA?
4,148 on July 1, 2024, in the Census Vintage 2024 estimates. That is down 30 (0.7%) from 4,178 in July 2020.
What county is Jefferson in?
Greene County. All of its residents live in that county.
What ZIP codes cover Jefferson?
1 ZIP Code Tabulation Area overlaps it by at least 10% of either area: 50129.
How far is Jefferson from Des Moines?
49.6 miles (79.9 km) in a straight line, heading SE from Jefferson.
What is the nearest larger city to Jefferson?
Perry, IA, with 8,046 residents, 19.3 miles away between internal points.
Sources and data as of
Data as of: Census Vintage 2024 subcounty estimates (July 1, 2024), 2024 Gazetteer places, 2020 ZCTA to place relationship file.
- 01Census Vintage 2024 subcounty population estimates
- 02Census 2024 Gazetteer, places
- 03Census 2020 ZCTA to place relationship file
- 04Census 2024 cartographic boundary file, counties (1:5,000,000)
How every number is computed: methodology. Spotted a wrong figure? Report an error.