Old Monroe, Missouri
City · Population 279 · #589 in Missouri
About Old Monroe
Set in the eastern part of Missouri, Old Monroe is a tiny community with an estimated population of 279.
Officially, Old Monroe is an incorporated city with its own municipal government. The community covers 0.36 square miles, giving it a balanced suburban layout with room to breathe at roughly 775 residents per square mile.
📰 Old Monroe News Today
- Obituary of Carol Jean Schulte - Carter Carter - Ricks Funeral Home · Jul 15
- Kenneth "Ken" L. Bauer Pitman Funeral Home · Aug 10
- Luther William McClellan Obituary Mar 21, 2026 Baue Funeral Homes · Mar 24
- Dorothy A. Burkemper Obituary (2026) - Old Monroe, MO - Baue Funeral Home - O'Fallon Legacy obituary · Jul 21
- Families file lawsuits over 2023 Missouri crash that killed 4, citing deputies’ actions KSDK · Apr 30
Live headlines via Google News — updates through the day.
What Makes Old Monroe Unique
- The only place in America named Old Monroe — a truly one-of-a-kind name among 32,000+ US communities.
- Positioned in eastern Missouri, convenient to the region's corridors and crossings.
- Part of the fabric of Missouri — one of 1,082 recognized communities statewide.
Why People Love It Here
- A tight community feel that bigger cities can't replicate.
- Housing dollars stretch further here than in the nearest metro.
- Well connected: 3+ neighboring communities within 6 miles.
⚡ Quick Facts
StateMissouri
TypeCity
Population (2024)279
Rank in state#589 of 938
Land area0.36 sq mi
Density775/sq mi
Coordinates38.9342, -90.7491