Marengo is a city in and the county seat of Iowa County, Iowa, United States. It has served as the county seat since August 1845, even though it was not incorporated until July 1859. The population was 2,435 in the 2020 census, a decline from 2,535 in 2000.

Official town website ↗

From Wikipedia, licensed CC BY-SA 4.0 · facts via Wikidata (CC0)

How Marengo ranks

All →

#3Closest to a top hospital in IA #8Cheapest rent in IA #24Most affordable in IA All IA rankings →

Town numbers

ZIP code52301

Area code319

Living in Marengo

Housing in Marengo

$197K▲ 4.3% in a year Typical home value · Zillow

The typical Marengo home is worth about $197,000, up 4.3% in a year, 18% below the Iowa typical home.

Zillow Home Value Index · Redfin Data CenterHousing market →

Safety in Marengo

B⁻

Safety Grade B-

Marengo reports more crime per resident than most U.S. towns we grade: about 54% report less.

Violent crime per 1,000

Marengo 2.5

Iowa 2.4

U.S. 3.3

Property crime per 1,000

Marengo 7.1

Iowa 12

U.S. 15.5

FBI crime data, 2025 · crimes reported to policeCrime & safety →

Work & commute in Marengo

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Most working residents leave Marengo for work: only 16% work in town. The top destinations are Cedar Rapids (10%), Iowa City (9%) and Williamsburg (6%). Half commute less than 22 miles.

Cedar Rapids

10%

Iowa City

Williamsburg

Homestead

16%Work in townlive and work in Marengo 22 miWhere do people commute?the commute map 880Jobs based herea commuter town

Census LEHD 2023 · ACSWork & commute in Marengo →

Health in Marengo

Health Grade C

Healthier than 33% of U.S. towns on seven CDC estimates, and 56% of towns with similar incomes.

Compared with Iowa

4worse than IA

of 32 measures CDC estimates. The other 28 are too close to call.

Conditions 4▼ 8 close Habits all close Care all close Mind all close Everyday needs all close

BetterToo close to callWorse

What stands out

8.5%More adults with COPDIA 6.9% · worse 4%More adults who have had a strokeIA 3.3% · worse 7.7%More adults with heart diseaseIA 6.6% · worse

Care nearby

Compass Memorial HealthcareMarengo · 0.5 mi · ER · rural critical access

Eastern Iowa Rhys Jones Dental CenterCedar Rapids · 24.6 mi · sliding-scale fees

Primary careNo shortage

DentalNo shortage

Mental healthNo shortage

CDC PLACES 2025 · modeled estimates for adults · CDC's estimate for Marengo · CMS · HRSAHealth in Marengo →

Natural hazards in Marengo

Moderate

Expected storm and flood damage is higher than in 47% of U.S. communities.

🌊 Inland flooding🌪️ Tornadoes💨 Strong wind

9Does Marengo flood?paid flood claims since 1978 9Disasters that paid out herefederal disasters sent FEMA money to Marengo

FEMA National Risk Index December 2025 · OpenFEMANatural hazards in Marengo →

Climate in Marengo

Full climate →

Marengo has cold winters and warm summers. A typical July afternoon reaches 84°, a January night drops to 11°, and about 28 inches of snow falls in a normal winter.

32° / 15°Winter

60° / 38°Spring

83° / 61°Summer

62° / 40°Fall

How much snow does Marengo get?About 28 inches a winter.Rain & snow →When is the first frost?Around Oct 9, with the last in spring around Apr 28.Frost dates →Is it warmer than it used to be?+0.6° vs. the 20th century.Then & now →

NOAA U.S. Climate Normals, 1991–2020Climate in Marengo →

Schools in Marengo

All Marengo schools →

B⁺

School Grade B+

The public schools Marengo’s kids attend outperform 72% of Iowa’s districts on state tests. Among towns with similar incomes, they rank near the top.

#48Best public schoolsof 139 in IA

DistrictIowa Valley Comm School DistrictSchools2

Iowa Valley Elementary School BElementary · Grades PK–6 · 314 students Iowa Valley Jr-Sr High School B+High · Grades 7–12 · 229 students

School data from the U.S. Department of Education (NCES, EDFacts). The School Grade is our own summary of state test results, graded within IA. Ratings are from neighbors.