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Ingham County Michigan Last Updated: 11/20/2025 |
| Ingham County is a county located in the U.S. state of Michigan. As of the 2020 Census, the county population was 284,900. The county seat is Mason. Lansing, the state capital of Michigan, is largely located in the county. Lansing is the only state capital in the United States located in a county where Lansing is not the seat of government. | |