Photo: Paul Sableman · CC BY 2.0Living in Affton, MO: what to set up and who to call
Affton has no town government of its own, so St. Louis County runs its elections and most services, and its children attend Affton 101 School District. Tap water in Affton comes from Missouri American Water, which has a clean five-year EPA record (about 18% of systems its size had a health-based violation) and a latest lead result below detection.
I’m new in town
What to set up in Affton, and who provides it. Tap an answer for the details and where they come from.
Power, water and internet
Who to call to start service at a new address in Affton.
Power comes from Union Electric
Union Electric (Union Electric Co - (MO)), an investor-owned utility, serves all of Affton. Its homes paid an average of 13.3¢ per kWh in 2025, about $137 a month (its average across Missouri).
Service territory: HIFLD Electric Retail Service Territories (map dated Aug 2023). Prices and customers: EIA-861, 2025.
Water comes from Missouri American Water
Missouri American Water supplies almost all of Affton. It draws surface water (EPA lists St Louis City PWS as seller) and serves 1,111,000 people in all.
No health-based violations reported to EPA in the five years to October 2026, like 82% of the 27 systems serving more than 1,000,000 people.
The latest lead result on file, the 90th percentile of homes sampled in Jan 2023–Dec 2025, was 0.0 ppb, below the 15 ppb action level that applied. The highest in five years was 1.0 ppb. Results below detection are reported as 0, so 0 doesn’t mean no lead at any tap.
The system’s full record: EPA ECHO report
EPA SDWIS via Envirofacts (violations pulled Oct 9, 2026) and ECHO (lead samples, 2026Q3); service area: EPA Community Water System Service Area Boundaries v3.0. Violations are counted by the start of their compliance period. MO6010716.
6 home internet providers serve Affton
100% of 8,137 addresses can get 100/20 Mbps; 92% can get fiber.
| Provider | Technology | Addresses | Fastest (Mbps) |
|---|---|---|---|
| AT&T | Fiber, Fixed wireless, DSL | 99% | 5,000/5,000 |
| Spectrum | Cable, Fiber | 99% | 1,000/1,000 |
| Brown Dog Networks | Fixed wireless | 100% | 50/10 |
| Wisper | Fixed wireless | 92% | 800/250 |
| Verizon | Fixed wireless | 88% | 300/20 |
| T-Mobile | Fixed wireless | 88% | 100/20 |
FCC National Broadband Map, as of December 2025. Availability as providers report it, not speeds people get.
The nearest public drop-off is 3 miles away
Pickup rules, the dump and recycling in Affton.
Drop Off Recycling
Saint Louis, MO · run by City of St. Louis
This isn’t Affton’s own facility. Whether Affton residents may use it is the town’s rule: check the town’s office.
OpenStreetMap, as of Oct 9, 2026. © OpenStreetMap contributors.
Where your child goes to school
Public school districts and the school path by grade.
Most of Affton (71%) is in Affton 101 School District; parts are in Mehlville R-IX School District (14%) and Bayless School District (11%) and Lindbergh School District (5%).
C+School gradeSee Schools →U.S. Department of Education, NCES Common Core of Data, 2024–25. Enrollment rules and registration are the district’s.
No town hall: the county runs things
Affton is unincorporated, so St. Louis County is the local government.
Election office: FVAP local election office directory, updated Nov 2019; jurisdictions: EAC EAVS 2024. Registration rules and links: vote.gov, updated Nov 18, 2024.
Affton is in ZIP code 63123
ZIP codes where Affton residents live, with the share of the town in each.
| ZIP | Post office name | Share of Affton | ZIP’s residents in Affton |
|---|---|---|---|
| 63123 | Saint Louis, MO | 100% | 40% |
Census 2020 ZIP Code Tabulation Areas, by census block; post office names: GeoNames (CC BY 4.0). ZIPs created since 2020 are missing.
Getting around, the ER and the library
One line each; the subject pages have the rest.
ER: CMS hospital data. Library: IMLS Public Libraries Survey, FY2024.
Questions about living in Affton
Who supplies Affton’s drinking water, and has it had violations?
Missouri American Water (EPA ID MO6010716). It reported no health-based violations to EPA in the five years to October 2026; 82% of systems its size had none. Its latest lead 90th percentile was 0.0 ppb (Jan 2023–Dec 2025), against a 15 ppb action level.
Who provides electricity in Affton?
Union Electric (Union Electric Co - (MO)), an investor-owned utility. Its homes paid about 13.3¢ per kWh in 2025 (EIA).
What internet providers serve Affton?
AT&T, Spectrum, Brown Dog Networks, Wisper, Verizon, T-Mobile (FCC, as of December 2025).
What ZIP codes are in Affton?
63123. Census 2020 ZIP Code Tabulation Areas.
What school district is Affton in?
Affton 101 School District. Parts of the city are in Mehlville R-IX School District and Bayless School District and Lindbergh School District.
How do I register to vote in Affton?
In 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). Elections here are run by the St. Louis. Check your registration at voteroutreach.sos.mo.gov.
Sources & dates
Every answer above names its source. Here they are with their dates.
- Water: EPA SDWIS (Envirofacts, pulled Oct 9, 2026), ECHO SDWA 2026Q3, EPA CWS Service Area Boundaries v3.0.
- Power: HIFLD Electric Retail Service Territories (map Aug 2023); EIA-861 final 2025.
- Trash: OpenStreetMap, Geofabrik extract of Oct 9, 2026. © OpenStreetMap contributors (ODbL).
- ZIP codes: Census 2020 ZCTA relationship files; GeoNames postal codes (CC BY 4.0).
- Schools: NCES Common Core of Data, 2024–25.
- Registration: vote.gov, updated Nov 18, 2024 (read Oct 10, 2026). Official sites and area codes: Wikidata.
- Election office: FVAP local election office directory (fetched Oct 10, 2026; each record dated), EAC EAVS 2024 jurisdictions; registration and lookup links from vote.gov’s state data, checked Oct 10, 2026.
- Internet: FCC National Broadband Map, as of December 2025.