Black Walnut, Missouri
Black Walnut: a city in Saint Charles County, Missouri.
About
Black Walnut is a city located in the county of Saint Charles in the U.S. state of Missouri.
Quick Facts about Black Walnut
| State | Missouri (United States) |
| County | Saint Charles County |
| Latitude & Longitude | 38.8734,-90.3712 |
| Time Zone | America/Chicago |
| Local time | 09:29:54 (8th November 2026) |
| Weather | 35℉ Mostly Clear 7-days weather |
Geography
Black Walnut is located at 38°52'24"N 90°22'16"W (38.8733800, -90.3712300).
Black Walnut map
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Weather
35°F
Mostly Clear
0 to 5 mph SW
Saturday Night
Mostly clear, with a low around 35. Southwest wind 0 to 5 mph.
7-Day ForecastNearby Schools and Colleges
Schools and campuses linked to Black Walnut, MO. Select a name to open its map and contact details.
| Code | Name | City | ZIP |
|---|---|---|---|
| 148016 | Principia College | Elsah (IL) | 62028-9799 |
Nearby Transit Stations (7)
Rail and bus stations connected to Black Walnut, MO. Select a station to open its map and address details.
| Code | Name | Address | Type |
|---|---|---|---|
| ALN | Alton | 3400 College Ave. | RAIL |
| STL | Gateway Transportation Center | 551 South 16th St. | RAIL |
| KWD | Kirkwood | 110 West Argonne Dr. | RAIL |
| CRV | Carlinville | 128 Alton Rd. | RAIL |
| WAH | Washington | 301 West Front St. | RAIL |
Closest post offices linked to Black Walnut.
| Post Office Name | City | ZIP |
|---|---|---|
| Carr Post Office | Florissant (MO) | 63031 |
Other cities in Saint Charles County
Cities, towns, neighborhoods & other populated places in Saint Charles County , MO.
| City Name | Population | Title |
|---|---|---|
| O'Fallon | 89,769 | The most populous city in St. |
| Saint Charles | 71,761 | A city in St. |
| Saint Peters | 58,043 | The most populous city in St. |
| Wentzville | 43,109 | A city in St. |
| Lake Saint Louis | 17,186 | City in Saint Charles County, Missouri, United States |
| Dardenne Prairie | 13,397 | City in Saint Charles County, Missouri, United States |
| Cottleville | 5,925 | City in Saint Charles County, Missouri, United States |
| Weldon Spring | 5,546 | City in Saint Charles County, Missouri, United States |
| Saint Paul | 2,796 | City in St. |