| 49310 Blanchard | 989 | Isabella County | Michigan (MI) |
| 48859 Central Michigan University | 989 | Isabella County | Michigan (MI) |
| 48893 Lake Isabella | 989 | Isabella County | Michigan (MI) |
| 49310 Millbrook | 989 | Isabella County | Michigan (MI) |
| 48804 Mount Pleasant | 989 | Isabella County | Michigan (MI) |
| 48858 Mount Pleasant | 989 | Isabella County | Michigan (MI) |
| 48859 Mount Pleasant | 989 | Isabella County | Michigan (MI) |
| 48878 Rosebush | 989 | Isabella County | Michigan (MI) |
| 48883 Shepherd | 989 | Isabella County | Michigan (MI) |
| 48893 Weidman | 989 | Isabella County | Michigan (MI) |
| 48896 Winn | 989 | Isabella County | Michigan (MI) |