PRIORITY 1
Ray County
Boundary permission pendingBoundary-display permission and a county-approved source are pending. Ownership data is outside this release.
View county on mapOpen county property recordsCounty data terms / request information
Back to parcel layersCOUNTY PARCEL BOUNDARIES
Parcel boundaries first.
Ray and Clay remain our first priorities. St. Charles is the next candidate for a layer showing parcel outlines and source information.
No private parcel boundaries are live in MoMonuments yet.
Boundary-display rights are still being reviewed. Owner names and addresses are excluded from this release. Use the official county links below for current property research.
First counties
PRIORITY 2
Clay County
Boundary permission pendingA parcel source is identified. Clay requires a written agreement for parcel lines; boundary-display permission is pending.
View county on mapOpen county property recordsCounty data terms / request informationPRIORITY 3 · NEXT CANDIDATE
St. Charles County
Terms reviewOpen-data parcel source identified. Commercial display of its boundaries still needs clarification.
View county on mapOpen county property recordsCounty data terms / request informationWhat the boundary layer will show
Approximate parcel outlines, a parcel reference, the county source and its data date. The map will request only geometry and identifiers. Owner names, property and mailing addresses, assessed values, phone numbers and email addresses are excluded.
Boundary-display permission is reviewed independently of ownership information. Approval for parcel lines can activate this release without waiting for a decision on ownership data.
County outlines currently frame the map; they are not individual property lines. Tax parcels can include public holdings and do not replace a boundary survey, establish title or authorize entry.
Remaining areas, by population
Ray, Clay and the St. Charles candidate lead the review. Remaining areas follow the July 1, 2025 population estimates. St. Louis City is an independent county-equivalent. Review order does not guarantee data availability.
| Priority | County / area | 2025 population | Boundary status |
|---|---|---|---|
| 4 | St. Louis County | 990,911 | Terms review |
| 5 | Jackson County | 732,994 | Planned |
| 6 | Greene County | 309,286 | Planned |
| 7 | St. Louis City | 278,144 | Terms review |
| 8 | Jefferson County | 233,132 | Planned |
| 9 | Boone County | 191,746 | Planned |
| 10 | Jasper County | 127,428 | Planned |
| 11 | Cass County | 115,859 | Planned |
| 12 | Platte County | 114,400 | Planned |
Sources reviewed September 28, 2026. An open-data listing or reachable service is not recorded as commercial-display approval.