Affton, Missouri
23 topographic sheets cover this place, the earliest surveyed in 1933 and the latest in 1998. It stands in Gravois Township. It lies in ZIP code area 63123. The Survey maps it on the Webster Groves quadrangle. 20,417 people lived here at the 2020 count. It stands 617 feet above sea level.
On record in Affton
Buildings and businesses the archive holds for this place. Each opens its own page, with the source record it came from.
On the National Register 4 records
Affton High Schoollisted 2010
Louis Auguste Benoist Houselisted 1969
New Mount Sinai Cemeterylisted 2005
Joseph Sappington Houselisted 1982
Population over time
2 figuresAffton grew from 20,307 to 20,417 between 2010 and 2020. These are the recorded population figures Wikidata holds for this place, reached through the Geographic Names Information System number this page is keyed on rather than by name, so they belong to this place and not to another of the same name. Most are census counts, but not all are: an early figure may be a founding or settlement estimate, and an estimate published within five years of a census is left out. The change column is computed, and is left blank where more than 20 years separate a figure from the one before it, because a gap that long is not a change between two counts.
| Year | People | Change |
|---|---|---|
| 2010 | 20,307 | |
| 2020 | 20,417 | +110 (+1%) |
Topographic sheets covering this place
11 surveys from 23 printed sheetsMatched by testing this settlement's coordinate against the published boundary of every sheet in the United States Geological Survey's historical collection. Each opens the scanned sheet at the Survey.
- 1933 USGS Jefferson Barracks quadrangle1:24000
- 1941 USGS Jefferson Barracks quadrangle1:24000, 3 printings
- 1949 USGS Saint Louis quadrangle1:250000
- 1949 USGS St. Louis quadrangle1:250000
- 1954 USGS Webster Groves quadrangle1:24000, 5 printings
- 1962 USGS St. Louis quadrangle1:250000
- 1963 USGS St. Louis quadrangle1:250000, 4 printings
- 1966 USGS St. Louis quadrangle1:250000
- 1985 USGS St Louis quadrangle1:100000, 3 printings
- 1993 USGS Webster Groves quadrangle1:24000
- 1998 USGS Webster Groves quadrangle1:24000, 2 printings
Fires near this place
4 since 2006Regional context, not property-specific evidence. The federal wildfire occurrence database lists 4 fires within 5 miles of Affton between 2006 and 2014, burning about 3 acres in total. None started naturally. None was recorded as arson. Distance is straight-line from the map coordinates, so a fire counted here may appear on a neighbouring settlement's page as well.
| Reported cause | Fires |
|---|---|
| Missing data/not specified/undetermined | 2 |
| Debris and open burning | 1 |
| Misuse of fire by a minor | 1 |
The most recent of them, most recent first, with the day each was reported and the service that recorded it.
| Date | Cause | Size | Reported by | Name on the report |
|---|---|---|---|---|
| 15 August 2007 | Missing data/not specified/undetermined | under an acre | Missouri State Fire Marshal's Office | not named |
| 22 March 2014 | Misuse of fire by a minor | 1.0 acres | Missouri Department of Conservation | not named |
| 28 February 2014 | Debris and open burning | 1.0 acres | Missouri Department of Conservation | not named |
| 9 October 2006 | Missing data/not specified/undetermined | 1.0 acres | Missouri State Fire Marshal's Office | not named |
Settlements close enough to share some of these fires:
Mines and quarries near this place
10 of 50 shownRegional context, not property-specific evidence. The federal mineral resources record lists 50 workings within 5 miles of Affton: 47 past producers, 3 producers. 3 still produce. What was taken out: Stone, Crushed/Broken, Clay, Fire Clay (Refractory), Sand and Gravel, Construction. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.
| Where | Site | Commodity | Status | Recorded |
|---|---|---|---|---|
| Krummel and Buchner Mine | Coal, Fire Clay (Refractory) | Past Producer | ||
| Parker-Russell Fireclay Mine | Fire Clay (Refractory), Coal | Past Producer | ||
| Tole and Thorp Fireclay Mine | Fire Clay (Refractory), Coal | Past Producer | ||
| Unknown - S&G | Sand and Gravel, Construction | Past Producer | ||
| Unknown - S&G | Sand and Gravel, Construction | Past Producer | ||
| Coffin Mine | Fire Clay (Refractory) | Past Producer | ||
| Gilker Fireclay Mine | Fire Clay (Refractory) | Past Producer | ||
| Grandview Fireclay Mine | Fire Clay (Refractory) | Past Producer | ||
| Jamieson Mine | Fire Clay (Refractory) | Past Producer | ||
| Jamieson Pit | Fire Clay (Refractory) | Past Producer |
Storms near this place
26 since 1993Regional context, not property-specific evidence. The National Weather Service names Affton in 26 storm reports between 1993 and 2025: 12 thunderstorm wind, 12 hail, 2 flash flood. No death or injury is recorded in these reports. Each account below is quoted exactly as the forecast office filed it, from the NOAA Storm Events Database, and each date opens the federal record of that event.
| When | Event | Place named | Harm | What the report says |
|---|---|---|---|---|
| May 1993 | Thunderstorm Wind | Affton | $5,000 | The public reported trees and power lines down. |
| May 2023 | Flash Flood | Affton | - | Between 3 and 6 inches of rain fell in a short amount of time over portions of southeastern St. Louis County. Several roads were flooded in Affton, Crestwood, Shrewsbury, and Oakville. Both directions of I-55 was briefly flooded near the Bayless Avenue exit. Also, the parking lot at Cedar Creek Lodge Apartments was flooded with several feet of water from the nearby creek. At least a dozen cars were flooded in the parking lot. |
| September 2012 | Thunderstorm Wind | Affton | - | Thunderstorm winds blew down numerous large tree limbs. |
| July 2012 | Thunderstorm Wind | Affton | - | Thunderstorm wind blew down a large tree. Part of the tree landed on a house causing moderate damage. |
| June 2008 | Thunderstorm Wind | Affton | - | Thunderstorm winds uprooted a 30 foot tall, 3 foot diameter pine tree in Affton. It fell onto a garage causing moderate damage. |
| July 2007 | Hail | Affton | - | Hail up to nickel size was reported to have fallen in the Affton area for about 20 minutes. |
| August 2007 | Thunderstorm Wind | Affton | - | Numerous large tree limbs were blown down. |
| July 2006 | Thunderstorm Wind | Affton | - | Several large trees were blown over as well as numerous power lines and tree limbs. |
| July 2006 | Thunderstorm Wind | Affton | - | Thunderstorm winds caused moderate roof damage to a building in Affton. Also, numerous trees, tree limbs and power lines were blown down. |
| April 2005 | Flash Flood | Affton | - | Very heavy rain fell in a short amount of time over St. Louis County. In Affton, Grant Road in Grantwood Village, between Gravois Road and Pardee Road, was briefly closed due to fast rising water from the creek along Grant Road. |
| June 2005 | Thunderstorm Wind | Affton | - | Amateur radio spotters reported a large tree limb blown onto a house in the Affton area. |
| April 2003 | Hail | Affton | - | Amateur radio spotters reported 1 inch hail. |
| May 2003 | Hail | Affton | - | Storm spotters reported 3/4inch hail in Affton. |
| June 2000 | Thunderstorm Wind | Affton | - | Storm spotters reported some trees down in the Affton area. |
| September 2000 | Thunderstorm Wind | Affton | - | Amateur radio spotters reported trees and power lines down in the Affton area of south St. Louis County. |
| August 2000 | Thunderstorm Wind | Affton | - | Amateur radio spotters reported trees down near the intersection of Sappinton and Concord Roads. |
| March 2025 | Hail | Affton | - | no account filed |
| June 2019 | Hail | Affton | - | no account filed |
| May 2018 | Hail | Affton | - | no account filed |
| June 2018 | Hail | Affton | - | no account filed |
| May 2011 | Hail | Affton | - | no account filed |
| June 2009 | Hail | Affton | - | no account filed |
| June 2009 | Hail | Affton | - | no account filed |
| June 2008 | Hail | Affton | - | no account filed |
| May 2008 | Hail | Affton | - | no account filed |
| June 2003 | Thunderstorm Wind | Affton | - | no account filed |
Nearest settlements
The eight closest, with where each one stands in the county. Distances are straight-line, computed from the Geographic Names Information System coordinates.
| Map | Place | Distance | Sheets |
|---|---|---|---|
| Grantwood | 0.7 miles | 23 | |
| Lakeshire | 0.8 miles | 23 | |
| Grantwood Village | 1.1 miles | 23 | |
| Wilbur Park | 1.3 miles | 23 | |
| Saint George | 1.4 miles | 23 | |
| Marlborough | 1.4 miles | 23 | |
| Green Park | 1.9 miles | 23 | |
| Mackenzie | 2.2 miles | 23 |
Elsewhere
Matched on this settlement's Geographic Names Information System number rather than its name, so it cannot be a different place of the same name in another state.
| Wikipedia article on Affton | An encyclopaedic summary. Its text is share-alike, so it is linked here rather than copied. |
| Wikidata item Q382985 | The structured record the population and elevation above come from. Public domain (CC0). |
Provenance
This settlement is recorded in the Geographic Names Information System as feature 755674. The sheet list is computed by point-in-boundary test against the United States Geological Survey's historical topographic inventory. Both are works of the United States government and carry no copyright under 17 U.S.C. 105.
Wildfire. Short, Karen C. 2022. Spatial wildfire occurrence data for the United States, 1992-2020 [FPA_FOD_20221014]. 6th Edition. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2013-0009.6 Collected with United States Government funding and usable without additional permissions or fees.
Mines and quarries. USGS Mineral Resources Data System (MRDS) https://mrdata.usgs.gov/mrds/ A work of the United States government, no copyright under 17 U.S.C. 105.
Storms. NOAA National Centers for Environmental Information, Storm Events Database https://www.ncei.noaa.gov/stormevents/ A work of the United States government, no copyright under 17 U.S.C. 105. Narratives are quoted verbatim from the National Weather Service report and are not edited or summarised.










