MarengoIL

A town of 7,040, settled in 1835. Nearly 4.9% of it is conserved land.

1 bordering townMap →

Photo: Andy McMurray · CC BY 2.5

Population

7,040

−1% since 2010

Median home value

$230K

Census ACS

Household income

$74K

median

Median age

31.9

years

Jobs based here

2,099

A commuter town

What makes Marengo stand out

The 3 things Marengo does most differently from other towns.

Picked automatically from the data

Conserved land & trails

Outdoors

#324 most conserved land in IL

2.1 miles of trails across 3 parks and preserves

4.9% of the town is conserved land.

100 U.S. towns● Marengo

Health

Healthier than 67%

of U.S. towns on CDC estimates

Better than IL on 0 measures, worse on 0.

Charles H. Hibbard House

History

Settled in 1835

2 places on the National Register

Archive photos and papers going back 191 years.

A commuter town

91% of working residents leave Marengo for work

Where Marengo’s working residents go each day. Line width shows the share.

2,099jobs based in Marengo

9%of working residents work in town

25 mimedian commute distance

Census LEHD 2023

Marengo’s report card

See the data ↓

Outdoors2 miof trails · 4.9% conserved HealthB+Healthier than 67% of U.S. towns Commute25 miHalf of commuters travel less Hazards25/100Low risk of storm & flood damage Climate83°/14°Summer high · winter low · 31″ snow SafetyB+Less crime than 65% of U.S. towns

Now in Marengo

Be the first to start the conversation.

Be the first neighbor to joinJoin Marengo →

Residents weigh in

Marengo is #790 of 820 in IL for “Oldest”. Fair?

Your answer becomes a post in Marengo’s Town Square.

Start a conversation

Weather

Forecast →

66°

Drizzle

H 68° · L 49°

Local news

All →

Upcoming events

Nothing on the calendar.

The data

Ordered by what stands out in Marengo. Another town gets a different order.

Housing

Homes in Marengo sell for about $339K

The median sale price was $339,000 in May 2026.

$339Kmedian sale price

Market temperature

days on market

99.8%

sale-to-list price

homes sold in May

Zillow Home Value Index · Redfin Data CenterHousing market →

Outdoors

4.9% of Marengo is conserved land

2.1 miles of trails across 3 parks and preserves.

4.9%conserved

Map of Marengo: conserved land, trails and the top places to walk — Green: conserved land · dashed: trails · numbers: the places below

4.9%

conserved · 279 of 5,658 acres

2.1 mi

of trails · 0.2 per sq mi

#324

most conserved land in IL

Biggest places to walk	Trails	Acres
1. Coral Woods Conservation Area	—	108
2. Indian Oaks Park	—	56
3. Sponable Park	—	4

Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-USParks & trails →

Health

Healthier than 67% of U.S. towns

Marengo tracks Illinois closely on all 32 CDC measures.

B+Health Grade

32 measures vs. Illinois

0 better32 too close to call0 worse

Mercy Harvard Hospital

12.4 mi away · emergency room

1 of 3

care shortages: mental health

62nd

percentile among IL towns

CDC PLACES 2025 · modeled estimates for adults · CMS · HRSAFull health report →

Work & commute

Most working residents commute out of Marengo

Most working residents leave Marengo for work: only 9% work in town. The top destinations are Chicago (8%), Elgin (5%) and Crystal Lake (3%). Half commute less than 25 miles.

9%work in town

Where working residents work

In Marengo9%

Chicago8%

Elgin5%

Crystal Lake3%

Woodstock3%

25 mi

median commute distance

2,099

jobs based in Marengo

A commuter town

jobs vs. working residents

Census LEHD 2023 · ACSCommute map →

Natural hazards

Low risk, with inland flooding at the top

Expected storm and flood damage is higher than in 25% of U.S. communities.

25risk score of 100

FEMA risk score

Inland floodingTornadoesCold waves

paid flood claims since 1978

federal disasters paid out here

FEMA National Risk Index · OpenFEMANatural hazards →

Climate

Four seasons, pleasant summers

Marengo has cold, snowy winters and pleasant summers. A typical July afternoon reaches 83°, a January night drops to 14°, and about 31 inches of snow falls in a normal winter.

31″snow a winter

Typical low → high °F

Winter17–32°

Spring37–58°

Summer60–81°

Fall41–61°

Oct 12

typical first frost

Apr 28

typical last frost

+1.0°

vs. the 20th-century average

NOAA U.S. Climate Normals, 1991–2020Full climate →

Safety

Less crime per resident than 65% of U.S. towns

Marengo reports less crime per resident than 65% of the U.S. towns and cities we grade. Illinois has less reported crime than most states, so among its own towns Marengo sits closer to the middle.

B+Safety Grade

Violent crime per 1,000 residents

Marengo1.9

Illinois2.6

U.S.3.3

Property crime per 1,000 residents

Marengo6.6

Illinois15.6

U.S.15.5

65th

percentile among U.S. towns we grade

45th

percentile among IL towns

violent crimes reported in 2025

property crimes reported in 2025

FBI crime data, 2025 · crimes reported to policeFull safety report →

Charles H. Hibbard House · National Register of Historic Places

Marengo’s story

191 years in pictures

2 places on the National Register of Historic Places.

1835Marengo is settled

Explore the history →

Landmarks

2 places in Marengo on the National Register of Historic Places.

All landmarks →

Charles H. Hibbard House

Orson Rogers House

About Marengo

City in Illinois, United States

Official town website ↗

Marengo is a city in McHenry County, Illinois, United States on the Kishwaukee River. It lies approximately 60 miles west northwest of Chicago and approximately 30 miles east of Rockford. Per the 2020 census, the population was 7,568.

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