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Grinnell, IA

City in Poweshiek County, Iowa. ZIP codes: 50112.

Population

9,505

Land area

5.7sq mi

People per sq mi

1,671

ZIP codes

1

Grinnell and its ZIP codes

Full map

Grinnell at a glance

  • Grinnell is about 29 times as dense as Iowa as a whole.
  • By population, it ranks 44th among 1,017 cities and towns in Iowa.
  • The median household income is $65,320, 13% below the Iowa median of $75,059.
  • A typical owner-occupied home is valued at $209,500 and median rent is $895 a month.

Local data for Grinnell, IA

Counts from official public data

Housing and community stats

Grinnell, IA, American Community Survey 2020-2024

Full profile

Median household income

$65,320

Poverty rate

11.1%

Median home value

$209,500

Median rent

$895/mo

Homeownership

64.6%

Bachelor's or higher

37.5%

Median age

36.5

Average commute

12.3 min

Largest reported origins and ancestries: German Americans (3,131), Irish Americans (962), Dutch Americans (630).

Home values and rentsIncome, education and commute

Economy and federal money

Jobs, pay, income and spending are for Poweshiek County. PPP loans are for Grinnell.

Details

Unemployment rate

3.0%

Aug 2026, -0.4 pts in a year

Average annual pay

$60,260

9,222 jobs, 2025

Income per person

$60,476

BEA, 2024

Federal spending

$154M

FY 2026, $8,273 per person

PPP loans

$24.5M

596 loans, 2,856 jobs reported

Poweshiek County economyFederal spendingPPP loans

How people get to work

Grinnell, IA, workers 16 and older. American Community Survey 5-year estimates

  • Drove alone54.3%
  • Carpooled4.5%
  • Public transit0.0%
  • Walked19.9%
  • Bicycle3.3%
  • Taxi, ride-hailing, motorcycle or other0.4%
  • Worked from home17.6%

Average one-way commute: 12.3 minutes for people who do not work from home.

Environment and hazard risk

Grinnell, IA, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Very Low

Top: drought

Storm events since 1996

488

Countywide, mostly thunderstorm wind

Flood insurance policies

7

0.1% of homes, county

July high / Jan low

83° / 10°F

38.2 inches of rain a year

Hazards, floods and storm historyCheck a flood zone15 historic places

Health statistics

Share of adults in Grinnell, IA, CDC PLACES estimates

All 40 measures

Obesity

38.6%

U.S. 33.3% +5.3 pts

Diabetes

10.4%

U.S. 12.1% -1.7 pts

Smoking

13.0%

U.S. 12.8% about the same

Uninsured (18-64)

6.6%

U.S. 11.1% -4.5 pts

ZIP codes in Grinnell

1 in or overlapping Grinnell. Population shown

·

Cities near Grinnell

NameDistanceLand area (sq mi)
Oakland AcresCity4.9 mi0.3
MalcomCity8.9 mi0.8
KelloggCity9.4 mi0.4
SearsboroCity9.8 mi0.5
LynnvilleCity11 mi1.1
GilmanCity11 mi0.5
SullyCity12 mi0.6
MontezumaCity14 mi2.5
BrooklynCity15 mi1.3
LaurelCity15 mi0.2
Holiday LakeCensus-designated place16 mi2.7
NewtonCity16 mi11.3
FergusonCity17 mi0.3
New SharonCity18 mi0.9
MontourCity18 mi0.5
ReasnorCity18 mi0.6

Frequently asked questions

What county is Grinnell, IA in?
Grinnell is in Poweshiek County, Iowa.
What ZIP codes are in Grinnell, IA?
ZIP codes in or overlapping Grinnell include 50112.
What is the population of Grinnell, IA?
About 9,505 people live in Grinnell, based on American Community Survey 5-year estimates.
What cities are near Grinnell?
Nearby places include Oakland Acres (4.9 mi), Malcom (8.9 mi), Kellogg (9.4 mi), Searsboro (9.8 mi), Lynnville (11 mi).

Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023