Missouri · Census place 2910240
Byrnes Mill, Missouri
Byrnes Mill is a city in Jefferson County, Missouri with an estimated 3,189 residents on July 1, 2024. It is the 180th largest of 338 incorporated places of 1,000+ people in the state.
- Population 2024
- 3,189
- #180 of 338 in Missouri
- Change since 2020
- +0.3%
- +10 people
- Land area
- 5.1 sq mi
- + 0.12 sq mi water
- Density
- 620 / sq mi
- State median 1,448
Measure from here
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Byrnes Mill population, 2020 to 2024
Byrnes Mill added 10 residents from July 2020 to July 2024, a change of +0.3%. In the latest year it moved by -8.
Byrnes Mill covers 5.14 square miles of land and 0.12 of water, for 620 people per square mile of land. The median Missouri place of 5,000+ has 1,448, so Byrnes Mill is less dense than the typical town.
What county Byrnes Mill is in
All of Byrnes Mill's residents live in Jefferson County, which had 231,888 residents in 2024. Byrnes Mill holds 1.4% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.
ZIP codes in Byrnes Mill
2 ZIP Code Tabulation Areas (ZCTAs) overlap Byrnes Mill by at least 10% of the ZCTA's or the city's land: 63025, 63051. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.
Where Byrnes Mill is
The Census internal point of Byrnes Mill is at 38.439000, -90.573600. Jefferson City, the capital, is 87.0 miles W in a straight line. The nearest larger place is Eureka, MO (13,277 people), 5.7 miles away. The nearest city of 100,000 or more is St. Louis, MO, 22.4 miles away.
Internal point
- Decimal
- 38.439000, -90.573600
- DMS
- 38°26'20.40"N 90°34'24.96"W
- UTM
- 15N 711769.8E 4257313.4N
- Geohash
- 9yzddvw76
- Plus code
- 86CFCCQG+JH
Daylight in Byrnes Mill
At 38.44° N, Byrnes Mill gets about 14 h 51 min of daylight around the June solstice and 9 h 29 min around the December solstice, a swing of 5 h 22 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.
Places near Byrnes Mill
The eight nearest incorporated places of 1,000+ in Missouri, measured between internal points. The closest is Eureka, 5.7 miles away, with 13,277 people.
Questions people ask
What is the population of Byrnes Mill, MO?
3,189 on July 1, 2024, in the Census Vintage 2024 estimates. That is up 10 (0.3%) from 3,179 in July 2020.
What county is Byrnes Mill in?
Jefferson County. All of its residents live in that county.
What ZIP codes cover Byrnes Mill?
2 ZIP Code Tabulation Areas overlap it by at least 10% of either area: 63025, 63051.
How far is Byrnes Mill from Jefferson City?
87.0 miles (140.0 km) in a straight line, heading W from Byrnes Mill.
What is the nearest larger city to Byrnes Mill?
Eureka, MO, with 13,277 residents, 5.7 miles away between internal points.
Sources and data as of
Data as of: Census Vintage 2024 subcounty estimates (July 1, 2024), 2024 Gazetteer places, 2020 ZCTA to place relationship file.
- 01Census Vintage 2024 subcounty population estimates
- 02Census 2024 Gazetteer, places
- 03Census 2020 ZCTA to place relationship file
- 04Census 2024 cartographic boundary file, counties (1:5,000,000)
How every number is computed: methodology. Spotted a wrong figure? Report an error.