Census Tract 3117.39
Open-data reference.
St. Charles County, Missouri · O'Fallon GEOID: 29183311739
Tract Snapshot: Census Tract 3117.39, St. Charles County, MO
Census Tract 3117.39 is located in St. Charles County, Missouri, inside the municipal boundary of O'Fallon, and contains a population of approximately 4,380 residents per Census ACS 2023 five-year estimates. Median household income here is $137,398 — a figure the Census Bureau classifies as "High Income Area" when compared with the 2023 national median near $77,000. Rent data is not published for this tract in the current ACS release. Typical owner-occupied homes are valued around $401,200. The tract's poverty rate is 3.3%, measured as the share of residents with income below the federal poverty threshold.
Census tracts are small, relatively permanent statistical subdivisions of a county designed by the U.S. Census Bureau to contain roughly 1,200 to 8,000 residents, with boundaries held stable across decades so researchers can track neighborhoods over time. Tract-level figures from the American Community Survey are five-year rolling averages rather than snapshots — that smoothing reduces year-to-year noise in small areas but also means the numbers you see here describe the period ending in the reference year rather than a single moment. For context, we link back to the parent city and state pages where you can compare this tract against its neighbors.
Source: U.S. Census Bureau — American Community Survey 5-Year 2023 · GEOID: 29183311739 · Note: ACS margins of error widen at tract level
Location
- Census Tract
- Tract 3117.39
- GEOID (FIPS)
- 29183311739
- County
- St. Charles County
- State
- Missouri
- Nearest City
- O'Fallon
- Coordinates
- 38.760717, -90.686502
Income & Housing
Census ACS 5-Year 2023 estimates for this tract
| Metric | Value | Context | Source |
|---|---|---|---|
| Median Household Income | $137,398 | High Income Area vs. US ~$77,000 | ACS 2023 5-Year |
| Median Home Value | $401,200 | Owner-occupied units only | ACS 2023 5-Year |
| Poverty Rate | 3.3% | Below federal poverty threshold | ACS 2023 5-Year |
Explore More Data for O'Fallon, MO
What do people ask about O'Fallon, MO?
What is the population of Census Tract 3117.39? +
Census Tract 3117.39 in St. Charles County, Missouri has a population of approximately 4,380, based on U.S. Census Bureau ACS 2023 estimates.
What is the median household income in Census Tract 3117.39? +
The median household income in Census Tract 3117.39 (St. Charles County, MO) is $137,398, based on ACS 5-Year 2023 data. This is considered "High Income Area" relative to the national median of approximately $77,000.
What is the poverty rate in Census Tract 3117.39? +
Approximately 3.3% of residents in Census Tract 3117.39 have income below the federal poverty threshold, based on Census ACS 2023 data.
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- How to Read Census Data — Understand margins of error and ACS estimates
Source: U.S. Census Bureau ACS 5-Year Estimates 2023. Census tract boundaries and GEOID from 2023 TIGER/Line files. Population and income data may reflect margins of error for smaller tracts. Last updated: 2026 U.S. Census Bureau ACS 5-Year Estimates 2023. Census tract boundaries and GEOID from 2023 TIGER/Line files. Population and income data may reflect margins of error for smaller tracts. Last updated: 2026
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Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the U.S. Census Bureau ACS. Consult a qualified professional before making decisions based on this data.
Read our methodology — how this data is sourced, computed, and verified.