County or equivalent · 29183
St. Charles County, Missouri
Annual housing permits and reporting coverage
- Published estimate · 2025
- 1,661
- Reported only · 2025
- 1,651
- Added by estimation · 2025
- 10
Reported and estimated units by year
| Year and source | Published estimate | Reported only | Added by estimation |
|---|---|---|---|
| 2023 Census file | 2,677 | 2,664 | 13 |
| 2024 Census file | 2,040 | 2,019 | 21 |
| 2025 Census file | 1,661 | 1,651 | 10 |
2024 to 2025 · published estimate -379 units · reported only -368 · added by estimation -11. This split describes the difference between the published columns.
What types of housing were authorized?
| Units in building | Published estimate | Reported only | Added by estimation |
|---|---|---|---|
| One unit | 1,270 | 1,260 | 10 |
| Two units | 2 | 2 | 0 |
| Three or four units | 105 | 105 | 0 |
| Five or more units | 284 | 284 | 0 |
Local housing and rent context
| Measure | Estimate and margin |
|---|---|
| Housing units · Census table B25001 | 167,163 ± 126 |
| Median gross monthly rent · Census table B25064 | $1,370 ± $21 |
| Gross rent at least 30% of income · Census table B25070 | 42.4% ± 2.3 percentage points |
| Gross rent at least 50% of income | 20.4% ± 2 percentage points |
| Estimated households with a computed rent-to-income ratio | 29,377 |
The 2025 permit estimate amounts to 9.9 authorized units per 1,000 housing units in the ACS estimate. The numerator and denominator cover different periods.
The Vintage 2025 Census housing stock estimate changed from 172,370 in 2024 to 174,278 in 2025 (+1,908 units). This is a separate model-based inventory estimate.
Permit offices listed under this county code
Use the office pages for their own histories and source coverage notes.
- CottlevillePermit office 29148500 · St. Charles County · 77 authorized units
- Dardenne PrairiePermit office 29163000 · St. Charles County · 83 authorized units
- Flint HillPermit office 29221000 · St. Charles County · 7 authorized units
- ForistellPermit office 29224000 · St. Charles County · 94 authorized units
- Josephville villagePermit office 29331000 · St. Charles County · 10 authorized units
- Lake St. LouisPermit office 29353000 · St. Charles County · 153 authorized units
- OFallonPermit office 29476500 · St. Charles County · 446 authorized units
- Portage Des SiouxPermit office 29526500 · St. Charles County · 0 authorized units
- St. CharlesPermit office 29601500 · St. Charles County · 263 authorized units
- St. Charles County Unincorporated AreaPermit office 29602000 · St. Charles County · 179 authorized units
- St. PaulPermit office 29609000 · St. Charles County · 33 authorized units
- St. PetersPermit office 29609500 · St. Charles County · 77 authorized units
- Weldon Spring Heights townPermit office 29686000 · St. Charles County · 0 authorized units
- WentzvillePermit office 29689000 · St. Charles County · 239 authorized units
Sources and definitions
How to read these figures
- The Census Building Permits Survey counts new privately owned housing units authorized by permits. One permit can cover multiple units. The counts describe authorizations, a stage before starts and completions.
- The published estimate includes reported units and Census estimates that fill gaps. The difference is calculated from those two columns. Reported-only units can include records from approved alternative sources. A missing report can leave an office without a usable count.
- County and state totals come from their own Census files. Permit offices can cover places across county lines or areas served by another jurisdiction. The office’s county field is used for navigation.
- ACS housing inventory and rents are survey estimates for 2020–2024. Gross rent includes rent and separately paid utilities or fuels. Rent burden is the share paying at least 30% of income among cash-rent households with a computed ratio. Margins are at 90% confidence. The margin for rent burden is approximate.
- Vintage 2025 county housing stock is a separate Census series. Its model uses building-permit data alongside other inputs. Read stock change and permits as separate measures.
Public sources retrieved November 10, 2026. Building Permits Survey annual data · Survey methodology · American Community Survey data · Download the comparison