Postal entity record
US 49757 Postal Code Data Source-backed
49757 postal code facts for Mackinac Island, US: region, coordinates, source, and nearby postal codes.
CountryUS
PlaceMackinac Island
RegionMI
Nearby rows12
Key metadata
| Place | Mackinac Island |
|---|---|
| Admin area | Michigan / MI |
| Local area | Mackinac |
| Coordinates | 45.8578, -84.6245 |
| GeoNames accuracy | 4 |
| Source | GeoNames postal code data |
| License | GeoNames postal data; provided as-is with attribution required. |
| Snapshot date | 2026-06-02 |
What this record means
This row links US 49757 to Mackinac Island, the available admin area, centroid coordinates, source accuracy, and source snapshot metadata.
Use it as a reference-data join for cleaning CRM rows, grouping operational reports, preparing territory QA, or checking whether an imported postal value has a source-backed match.
What the centroid can support
The latitude and longitude represent a postal centroid from the source snapshot. They are useful for approximate map previews, nearby-record review, deduplication checks, and distance-based QA.
They should not be treated as an official delivery boundary, address-level geocode, tax boundary, or service-area guarantee.
Sample CSV enrichment output
| Input field | Added output | Example value |
|---|---|---|
| postal_code | matched_place | Mackinac Island |
| postal_code | admin_area | Michigan |
| postal_code | centroid | 45.8578, -84.6245 |
Nearby postal codes
| Code | Place | Region | Distance |
|---|---|---|---|
| 49701 | Mackinaw City | Michigan | 7.5 mi |
| 49781 | Saint Ignace | Michigan | 10.3 mi |
| 49718 | Carp Lake | Michigan | 10.7 mi |
| 49775 | Pointe Aux Pins | Michigan | 11.1 mi |
| 49745 | Hessel | Michigan | 14.7 mi |
| 49719 | Cedarville | Michigan | 16.6 mi |
| 49755 | Levering | Michigan | 17.4 mi |
| 49721 | Cheboygan | Michigan | 18.5 mi |
| 49761 | Mullett Lake | Michigan | 21.2 mi |
| 49760 | Moran | Michigan | 22.5 mi |
| 49769 | Pellston | Michigan | 22.5 mi |
| 49774 | Pickford | Michigan | 24 mi |