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Missouri›Barton County

IrwinMO

The town was settled in 1884 and has 43 residents today.

Is Irwin a good place to live?

100% of adults 25 and older hold a bachelor’s degree or more in Irwin, where Missouri’s towns sit at 22% and U.S. towns at 29%. Irwin has fewer than 1,000 residents, too few for fair grades; the figures below are still real.

Small town

43 people, and everyone knows the way

In a town this size, neighbors are the best guide. Ask them anything.

Nearby towns
Getting set up

Moving to Irwin: who provides what

Irwin is unincorporated, so Barton County and regional agencies provide most services.

PowerEvergy12.1¢/kWh · EIA 2025HIFLD · EIA
WaterBarton Dade Cedar Jasp Countycons Pwsd 1No health-based violations in 5 years · EPAEPA
InternetProviders and speedsData pending · D4
Trash & county servicesBarton CountyBarton County provides services here
SchoolsLamar R-I School DistrictWhich school depends on your addressNCES
Register to voteOnlineIn Missouri you can register online until 27 days before Election Day, in person until 27 days before Election Day, or by mail (postmarked 27 days before).vote.gov
Who runs elections hereBartonBarton County; contacts on the Handbook page.FVAP, Aug 2019
ZIP code6475964759 100%Census 2020

EPA SDWIS (Oct 9, 2026) · HIFLD + EIA-861 2025 · Census 2020 ZCTAs · NCES 2024–25 · registration: vote.gov, updated Nov 18, 2024.

The data

Ordered by what stands out in Irwin.

Natural hazards

Natural hazards: high risk in Irwin, mostly inland flooding

Households in Irwin have drawn federal disaster aid once, in 2003. Storm and flood damage is expected to run higher than in just over three quarters of U.S. communities. FEMA puts 40% of the town’s expected hazard losses down to inland flooding, and 24% to drought.

76risk score of 100
FEMA risk score
76High riskLowerHigher
Inland floodingDroughtTornadoes
1
federal disasters paid out here

FEMA disaster declarations and aid · FEMA National Risk Index · OpenFEMA

Climate

Four seasons and hot summers in Irwin

July afternoons reach 90°, January nights drop to 24° and about 7 inches of snow falls in a winter.

7″snow a winter

Typical low → high °F

Winter27–46°
Spring46–67°
Summer67–88°
Fall47–69°
Oct 27
typical first frost
Apr 9
typical last frost
+0.4°
vs. the 20th-century average

NOAA U.S. Climate Normals, 1991–2020

Health

How healthy Irwin is

Among adults in Irwin, 28% say their health is fair or poor. In Irwin, nearly a quarter of adults smoke cigarettes, and 37% get no exercise outside work.

IrwinTypical Missouri townTypical U.S. town
Frequent physical distress (CDC PLACES)19%15%14%
Smoke cigarettes (CDC PLACES)23%17%14%
Get no exercise (CDC PLACES)37%30%25%
Fair or poor health (CDC PLACES)28%22%19%
32 measures vs. Missouri
0 better13 too close to call19 worse
What stands outIrwinMO
More older adults who have lost all their teeth26.8%15.8%
More adults with COPD12.9%8%
More adults with heart disease9.7%6.8%
Cox Barton County Hospital
6 mi away · emergency room
3 of 3
care shortages: primary care, dental, mental health

CDC PLACES 2025 · modeled estimates for adults · CMS · HRSA

Keep exploring

Everything we know about Irwin

12pages on Irwin
After high school

Colleges nearby

None within 15 miles of Irwin; the nearest are

About Irwin

Unincorporated community in Missouri, U.S.

Irwin is an unincorporated community and census-designated place in northern Barton County, Missouri, United States. As of the 2020 census it had a population of 47.

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

Area
0.3 sq mi
Elevation
974 ft

Questions about Irwin

Short answers, built from the data on this page.

Is Irwin, MO a good place to live?

Irwin has fewer than 1,000 residents, too few for fair grades; the figures below are still real.