Know what’s behind the map.
MapLedger is a free research tool built on open business records. You can inspect the evidence, take the data with you, and understand what each score means.
Business coverage by city
Each business catalogue covers a bounded area around the city centre. It is not a complete city directory or a worldwide search. Counts, dates and boundaries below come from each published catalogue. Records outside its boundary are not included.
Austin
20,992 records. Captured 2026-09-21. Overture Maps release 2026-08-19.0. Excludes 651 source records marked permanently closed.
Boundary (west, south, east, north): -97.79, 30.23, -97.7, 30.31. Coverage and history as JSON.
Capture history for Austin
- 2026-09-21, release 2026-08-19.0: 20,992 records; 0 changed.
Nashville
19,384 records. Captured 2026-10-04. Overture Maps release 2026-09-23.1. Excludes 769 source records marked permanently closed.
Boundary (west, south, east, north): -86.84, 36.12, -86.74, 36.2. Coverage and history as JSON.
Capture history for Nashville
- 2026-10-04, release 2026-09-23.1: 19,384 records; 0 changed.
Denver
30,070 records. Captured 2026-10-03. Overture Maps release 2026-09-23.1. Excludes 2,162 source records marked permanently closed.
Boundary (west, south, east, north): -105.02, 39.7, -104.94, 39.78. Coverage and history as JSON.
Capture history for Denver
- 2026-10-03, release 2026-09-23.1: 30,070 records; 0 changed.
Chicago
39,076 records. Captured 2026-10-03. Overture Maps release 2026-09-23.1. Excludes 3,569 source records marked permanently closed.
Boundary (west, south, east, north): -87.652, 41.874, -87.62, 41.902. Coverage and history as JSON.
Capture history for Chicago
- 2026-10-03, release 2026-09-23.1: 39,076 records; 0 changed.
Washington DC
34,122 records. Captured 2026-10-03. Overture Maps release 2026-09-23.1. Excludes 3,322 source records marked permanently closed.
Boundary (west, south, east, north): -77.07, 38.88, -76.99, 38.93. Coverage and history as JSON.
Capture history for Washington DC
- 2026-10-03, release 2026-09-23.1: 34,122 records; 0 changed.
Los Angeles
35,027 records. Captured 2026-10-03. Overture Maps release 2026-09-23.1. Excludes 2,280 source records marked permanently closed.
Boundary (west, south, east, north): -118.295, 34.035, -118.225, 34.095. Coverage and history as JSON.
Capture history for Los Angeles
- 2026-10-03, release 2026-09-23.1: 35,027 records; 0 changed.
Land maps have separate sources and boundaries, shown on each city’s land page. The business API covers the catalogues above. MCP currently covers Austin and Nashville land tools, and central Austin business search. See the API and MCP docs.
What a missing website means
“No website listed” means the source record does not contain a usable website link. A business may still have a website. “Social presence only” means a social profile is listed, with no independent website in the record. Check the business before drawing conclusions or starting outreach.
Record completeness, not buyer intent
Record completeness: name 10, category 10, street address 20, independent website 30, phone 20, and email or social profile 10, for a maximum of 100. Missing fields earn no points. The score measures available fields, not their accuracy, buyer intent, business quality or permission to contact someone.
Source, freshness, and history
Every record retains its Overture ID, contributing datasets, licenses, upstream update times, release and collection time. Collection time is when we imported it; upstream observations can be older. The catalogue is a published snapshot. Refreshes are performed by the maintainer, and failed imports preserve the last successful snapshot.
Attribution and reuse
Place data is from Overture Maps Foundation and its contributors. Each source’s license is included in the API and exports. See Overture’s place attribution and the included notices. Maps use © OpenStreetMap contributors.
Sources in these catalogues use CDLA Permissive 2.0, Apache 2.0, and CC0 1.0. Follow the license attached to each source when you reuse its data.
What this release measures
Business discovery, available public contact details, website presence in the source, and record completeness. It does not measure Google Maps rankings, Google reviews, Google Business Profile optimization, website uptime, or verified owner identity. No inferred emails or invented ratings are added.