Grinnell, Iowa

Grinnell population, 2020 to 2024

Grinnell lost 42 residents from July 2020 to July 2024, a change of -0.4%. In the latest year it moved by +2. Among 85 Iowa places of 5,000 or more, that growth ranks 58th; the median place changed by +1.1%. The median place of 5,000+ in Iowa has 9,511 people, so Grinnell is 100% of it.

Grinnell covers 5.69 square miles of land and 0.04 of water, for 1,669 people per square mile of land. The median Iowa place of 5,000+ has 1,363, so Grinnell is denser than the typical town.

What county Grinnell is in

All of Grinnell's residents live in Poweshiek County, which had 18,454 residents in 2024. Grinnell holds 51.5% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Grinnell

1 ZIP Code Tabulation Area (ZCTA) overlaps Grinnell by at least 10% of the ZCTA's or the city's land: 50112. 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 Grinnell is

The Census internal point of Grinnell is at 41.735200, -92.724900. Des Moines, the capital, is 46.5 miles WSW in a straight line. The nearest larger place is Newton, IA (15,709 people), 16.5 miles away. The nearest city of 100,000 or more is Des Moines, IA, 47.0 miles away.

Daylight in Grinnell

At 41.74° N, Grinnell gets about 15 h 13 min of daylight around the June solstice and 9 h 09 min around the December solstice, a swing of 6 h 04 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Grinnell

The eight nearest incorporated places of 1,000+ in Iowa, measured between internal points. The closest is Brooklyn, 14.4 miles away, with 1,474 people.