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Byrnes Mill

A city of 3,189 people in Missouri
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Around town

The places and views that make it Byrnes Mill

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Outdoors in Byrnes Mill

Parks & trails →
Conserved land0.6%20 of 3,331 acres
Trails0.0 mi0 mi per sq mi
Parks & preserves16 conserved acres per 1,000 residents

Know a trail or park that’s missing? Anyone can add it to OpenStreetMap, and it shows up here on the next refresh.

Trails & parks © OpenStreetMap contributors · Conserved land: USGS PAD-US

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About Byrnes Mill

City in Missouri, United States
3,173Population
5.3 sq miArea
459 ftElevation

Byrnes Mill is a city in northern Jefferson County, Missouri, United States. The population was 3,173 at the 2020 census.

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

Living in Byrnes Mill

Housing in Byrnes Mill

$358K▲ 3.3% in a year Typical home value · Zillow

The typical Byrnes Mill home is worth about $358,000, up 3.3% in a year, 34% above the Missouri typical home.

A strong seller's market

Buyer’sBalancedSeller’s
Days on market3
Sale-to-list104.2%
Sold in May7
Zillow Home Value Index · Redfin Data CenterHousing market →

Safety in Byrnes Mill

C+

Safety Grade C+

Byrnes Mill reports more crime per resident than most U.S. towns we grade: about 62% report less.

Violent crime per 1,000
Byrnes Mill 1.6
Missouri 4.3
U.S. 3.3
Property crime per 1,000
Byrnes Mill 4.4
Missouri 16.9
U.S. 15.5
FBI crime data, 2025 · crimes reported to policeCrime & safety →

Work & commute in Byrnes Mill

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Most working residents leave Byrnes Mill for work: only 0% work in town. The top destinations are St. Louis (12%), Fenton (6%) and Chesterfield (5%). Half commute less than 17 miles.

St. Louis
12%
Fenton
6%
Chesterfield
5%
Clayton
4%
Census LEHD 2023 · ACSWork & commute in Byrnes Mill →

Health in Byrnes Mill

C

Health Grade C

Healthier than 32% of U.S. towns on seven CDC estimates.

Compared with Missouri

≈Just like Missouri

No difference on any of 32 measures is outside the margin of error.

BetterToo close to callWorse

What stands out

Nothing stands out: Byrnes Mill tracks Missouri closely.

Care nearby

Ssm St. Clare Health CenterFenton · 8.1 mi · ER
Compass Health - House SpringsHouse Springs · 1.6 mi · sliding-scale fees
Primary careShortage · county-wide
DentalNo shortage
Mental healthNo shortage
CDC PLACES 2025 · modeled estimates for adults · CDC's estimate for Byrnes Mill · CMS · HRSAHealth in Byrnes Mill →

Natural hazards in Byrnes Mill

90
Very high

Expected storm and flood damage is higher than in 90% of U.S. communities.

🌊 Inland flooding🌪️ Tornadoes🏚️ Earthquakes
FEMA National Risk Index December 2025 · OpenFEMANatural hazards in Byrnes Mill →

Climate in Byrnes Mill

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Byrnes Mill has chilly winters and warm summers. A typical July afternoon reaches 88°, a January night drops to 23°, and about 10 inches of snow falls in a normal winter.

44° / 26°Winter
67° / 45°Spring
87° / 66°Summer
68° / 47°Fall
NOAA U.S. Climate Normals, 1991–2020Climate in Byrnes Mill →

Libraries near Byrnes Mill

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Nearest: Northwest BranchHigh Ridge · 2.3 miles · 60 hrs a week

Famous people close to Byrnes Mill

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Where Byrnes Mill is

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Locator map of Byrnes Mill
Wikimedia Commons · Map: Arkyan · CC BY-SA 3.0

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Bordering towns

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Scotsdale Byrnes Mill Scotsdale
Compare side by side:Byrnes Mill vs Scotsdale

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Byrnes Mill is your selected town. The feed includes posts assigned to this town, not a distance radius or ZIP code.

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Boundary source: https://tigerweb.geo.census.gov/arcgis/rest/services/TIGERweb/Places_CouSub_ConCity_SubMCD/MapServer/18 · 2025-01-01