Byrnes Mill, Missouri
Byrnes Mill: City in Jefferson County, Missouri, United States
About
Byrnes Mill is a city located in the county of Jefferson in the U.S. state of Missouri. Its population at the 2010 census was 2,781 and a population density of 204 people per km². After 10 years in 2020 city had an estimated population of 3,015 inhabitants.
Quick Facts about Byrnes Mill
| Population : | 3,015 (2020) |
| Country : | United States of America |
| State : | Missouri (United States) |
| County : | Jefferson County |
| Postal code : | 63051 |
| Phone Area Codes : | 636 |
| Area : | 13.63 km2 |
| Altitude : | 459 feet / 140 meters |
| Time Zone : | America/Chicago |
| Local time : | 14:49:23 (5th December 2025) |
| Density : | 221 Pop. per km² as of 2020 |
| Population growth : | 7.76% (2010-2020) |
Geography
Byrnes Mill is located at 38°26'16"N 90°34'54"W (38.4378300, -90.5817900).
Byrnes Mill map
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Demographics
The population of Byrnes Mill increased by 7.76% in 10 years.
| Year | Population | % Change | Method |
| 2010 | 2,781 | - | census |
| 2011 | 2,782 | 0.04% | estimation process |
| 2012 | 2,789 | 0.25% | estimation process |
| 2013 | 2,808 | 0.68% | estimation process |
| 2014 | 2,845 | 1.3% | estimation process |
| 2015 | 2,902 | 1.96% | estimation process |
| 2016 | 2,950 | 1.63% | estimation process |
| 2017 | 2,985 | 1.17% | estimation process |
| 2018 | 2,996 | 0.37% | estimation process |
| 2019 | 3,002 | 0.2% | estimation process |
| 2020 | 3,015 | 0.43% | estimation process |
Schools in Byrnes Mill
College & universities near Byrnes Mill, MO
| Code | Name | City | ZIP |
|---|---|---|---|
| 442426 | St Louis College of Health Careers-Fenton | Fenton (MO) | 63026 |
Stations (6)
Amtrak & bus stations near Byrnes Mill, MO
| Code | Name | Address | Type |
|---|---|---|---|
| KWD | Kirkwood | 110 West Argonne Dr. | RAIL |
| STL | Gateway Transportation Center | 551 South 16th St. | RAIL |
| WAH | Washington | 301 West Front St. | RAIL |
| ALN | Alton | 3400 College Ave. | RAIL |
| HEM | Hermann | Wharf & Gutenberg Sts. | RAIL |
Post offices near Byrnes Mill
| Post Office Name | City | ZIP |
|---|---|---|
| House Spring Post Office | House Springs (MO) | 63051 |
Other cities in Jefferson County
Cities, towns, neighborhoods & other populated places in Jefferson County , MO.
| City Name | Population | Title |
|---|---|---|
| Arnold | 21,145 | City in Missouri |
| Festus | 12,114 | City in Missouri |
| De Soto | 6,340 | City in Jefferson County, Missouri |
| Pevely | 6,001 | City in Jefferson County, Missouri, United States |
| Barnhart | 5,682 | Census designated place |
| Crystal City | 4,700 | City in Jefferson County, Missouri, United States |
| High Ridge | 4,305 | Census designated place |
| Herculaneum | 4,261 | Roman town |
| Riverside | 3,528 | City in Platte County, Missouri, United States |
| Hillsboro | 3,355 | City in Missouri, United States |
| Olympian Village | 752 | City in Jefferson County, Missouri, United States |
| Cedar Hill Lakes | 227 | Village in Jefferson County, Missouri, United States |
| Scotsdale | 216 | Human settlement in Jefferson County, Missouri, United States of America |
| Parkdale | 162 | Human settlement in Jefferson County, Missouri, United States of America |
| Kimmswick | 140 | City in Jefferson County, Missouri, United States |
Distance to Other Cities
Byrnes Mill distances to largest Missouri cities
