How to get the St. Louis County voter file
Request it from the office below, send us the file, and you're ready to cut turf. Running countywide or in just part of St. Louis County? This is the office either way.
- Where to request it
- St. Louis County Board of Elections(314) 615-1800 | [email protected] | 725 Northwest Plaza Drive, St. Ann, MO 63074 | Mon-Fri 8:00 a.m.–4:30 p.m.
- Cost
- Quoted on request — not published online. Under RSMo 115.157 / Chapter 610 the BoE may charge actual-cost (search + duplication, paper copies capped at 10 cents/sheet). Call (314) 615-1800 for current schedule.
- How to request
- Phone or written request to the St. Louis County Board of Elections. Lists are restricted to political use only (consistent with RSMo 115.157.5). Available scopes: countywide, by political subdivision, by precinct, or by district. Delivery typically via flash drive or electronic file.
- Turnaround
- Typically 1-2 weeks after payment.
- Use restrictions
- Political use only — RSMo 115.157.5 prohibits commercial use (Class A misdemeanor). St. Louis County BoE jurisdiction covers ~750K voters in the suburbs of St. Louis County ONLY. Does NOT include the City of St. Louis — that is a separate jurisdiction (St. Louis City BoEC). Confidential / Safe-at-Home program participants are suppressed.
Costs and rules change, so confirm the current details with the office before you order. Once you have the file, we handle loading it, cutting turf, and getting your volunteers knocking.
Prefer the whole-state file, or running in a county not listed here? See the Missouri statewide options.
St. Louis County at a glance.
St. Louis County had an estimated 992,929 residents in July 2024, the most populous of Missouri's 115 counties, down 1.2% since the 2020 census. Of those, 778,535 are 18 or older, the voting-age population, and 20.1% are 65 or older. It covers 508 square miles of land (1,955 people per square mile).
The largest cities and towns are Florissant (51,290), Chesterfield (49,465), Wildwood (35,082), University City (34,349) and Ballwin (31,036). The American Community Survey (2020-2024) puts it at a median age of 40.3, a median household income of $82,936, 47.4% of adults 25 and older holding a bachelor's degree or higher and 69.2% of occupied homes owned by the people living in them. In 2024, 502,356 votes were cast for president, about 64.5% of the voting-age population; the Democratic ticket took 60.8% and the Republican ticket 37.4%.
The two-party margin moved from D+19.9 in 2008 to D+23.4 in 2024.
- Population (2024 estimate)
- 992,929
- Population (2020 census base)
- 1,004,501
- Voting-age population (18+)
- 778,535
- Residents 65 and older
- 20.1%
- People per square mile
- 1,955
- Land area
- 508 sq mi
- Median age
- 40.3
- Median household income
- $82,936
- Adults 25+ with a bachelor's degree
- 47.4%
- Owner-occupied homes
- 69.2%
Largest cities and towns
- Florissant 51,290
- Chesterfield 49,465
- Wildwood 35,082
- University City 34,349
- Ballwin 31,036
Presidential vote, 2008–2024
| Year | Democratic | Republican | Margin | Votes cast |
|---|---|---|---|---|
| 2024 | 60.8% | 37.4% | D+23.4 | 502,356 |
| 2020 | 61.2% | 37.2% | D+24.0 | 536,446 |
| 2016 | 55.8% | 39.5% | D+16.3 | 503,493 |
| 2012 | 56.2% | 42.5% | D+13.7 | 524,628 |
| 2008 | 59.5% | 39.6% | D+19.9 | 559,854 |
Sources: U.S. Census Bureau Vintage 2024 population estimates and 2024 Gazetteer; American Community Survey 2020–2024 5-year estimates; certified county presidential returns. Growth, density and turnout are simple arithmetic on those figures.
Get set up in St. Louis County
Tell us about your race and we'll help you get the St. Louis County voter file loaded into Motion51 and your turf ready to walk.