Founded in 1859, Muskegon County is one of 83 counties in the state of Michigan. Historically, Muskegon County was formed from parts of Oceana County and Ottawa County. The city of Muskegon is the county seat. With FIPS code of 121, Muskegon County has a population of 176,511 and area of 1,459 square miles (3,779 km2).
List of all cities in Muskegon County, MI alphabetically
| City/Town | Postal Code | Area Code |
| Bailey, MI | 49303 | 231 |
| Brunswick, MI | 49425 | 231 |
| Casnovia, MI | 49318 | 231 |
| Fruitport, MI | 49415 | 231 |
| Holton, MI | 49425 | 231 |
| Lakewood Club, MI | 49457 | 231 |
| Montague, MI | 49437 | 231 |
| Muskegon, MI | 49440 | 231 |
| 49441 | 231 | |
| 49442 | 231 | |
| 49443 | 231 | |
| 49444 | 231 | |
| 49445 | 231 | |
| Muskegon Heights, MI | 49444 | 231 |
| North Muskegon, MI | 49445 | 231 |
| Norton Shores, MI | 49441 | 231 |
| 49444 | 231 | |
| Ravenna, MI | 49451 | 231 |
| Roosevelt Park, MI | 49441 | 231 |
| Sylvan Beach, MI | 49461 | 231 |
| 49463 | 231 | |
| Twin Lake, MI | 49457 | 231 |
| Whitehall, MI | 49461 | 231 |
| 49463 | 231 |