Iowa · Census place 1949485
Marion, Iowa
Marion is a city in Linn County, Iowa with an estimated 42,542 residents on July 1, 2024. It is the 13th largest of 273 incorporated places of 1,000+ people in the state.
- Population 2024
- 42,542
- #13 of 273 in Iowa
- Change since 2020
- +2.3%
- +968 people
- Land area
- 18.0 sq mi
- Density
- 2,363 / sq mi
- State median 1,363
Measure from here
Tools and pages that start from Marion
Marion population, 2020 to 2024
Marion added 968 residents from July 2020 to July 2024, a change of +2.3%. In the latest year it moved by +415. Among 85 Iowa places of 5,000 or more, that growth ranks 33rd; the median place changed by +1.1%. The median place of 5,000+ in Iowa has 9,511 people, so Marion is 4.5 times that size.
Marion covers 18.00 square miles of land, for 2,363 people per square mile of land. The median Iowa place of 5,000+ has 1,363, so Marion is denser than the typical town.
What county Marion is in
All of Marion's residents live in Linn County, which had 231,762 residents in 2024. Marion holds 18.4% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.
ZIP codes in Marion
1 ZIP Code Tabulation Area (ZCTA) overlaps Marion by at least 10% of the ZCTA's or the city's land: 52302. 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 Marion is
The Census internal point of Marion is at 42.044600, -91.586200. Des Moines, the capital, is 108.5 miles WSW in a straight line. The nearest larger place is Cedar Rapids, IA (137,904 people), 7.3 miles away.
Internal point
- Decimal
- 42.044600, -91.586200
- DMS
- 42°02'40.56"N 91°35'10.32"W
- UTM
- 15N 617007.0E 4655695.0N
- Geohash
- 9zqz5vuzw
- Plus code
- 86JC2CV7+RG
Daylight in Marion
At 42.04° N, Marion 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 Marion
The eight nearest incorporated places of 1,000+ in Iowa, measured between internal points. The closest is Robins, 5.1 miles away, with 3,362 people.
Questions people ask
What is the population of Marion, IA?
42,542 on July 1, 2024, in the Census Vintage 2024 estimates. That is up 968 (2.3%) from 41,574 in July 2020.
What county is Marion in?
Linn County. All of its residents live in that county.
What ZIP codes cover Marion?
1 ZIP Code Tabulation Area overlaps it by at least 10% of either area: 52302.
How far is Marion from Des Moines?
108.5 miles (174.7 km) in a straight line, heading WSW from Marion.
What is the nearest larger city to Marion?
Cedar Rapids, IA, with 137,904 residents, 7.3 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.