11,144 people (2024 Census estimate, +3.1% since 2020)
1,022 square miles of land · 11 people per square mile
“Highest” and “lowest” are just order, not grades: a high rank for poverty or hazard losses means more of it. Each figure's source is in its section below.
4 active community water systems list Mackinac County in the area they serve, reporting 3,670 people served in all (a system that crosses county lines counts its whole population).
| ST. IGNACE surface water · local government · MI0006290 | 2,987 served |
| MACKINAC ISLAND surface water · local government · MI0003970 | 583 served |
| MACK. CO. HOUSING-CURTIS groundwater · local government · MI0001692 | 50 served |
| MACK. CO. HOUSING-ENGADINE groundwater · local government · MI0002145 | 50 served |
Source: U.S. EPA Safe Drinking Water Information System (SDWIS), active community systems, . Look up any system's violations and test results with EPA's search using its ID.
About 10 people were held in Mackinac County's jail, in Vera's latest figure (2020), or 158 per 100,000 residents ages 15–64. In 2015 it was about 17.
Source: Vera Institute of Justice, Incarceration Trends (built from federal Bureau of Justice Statistics jail surveys). Counties without their own jail, or that share one, may show no figure.
6 school districts have their office in Mackinac County. School taxes are usually the largest part of a property tax bill.
Spent $8 million — $6.9 million to run schools, about $16,443 per student, plus $569,000 on buildings and equipment. Money in: $3.4 million local (mostly property tax), $3.8 million state, $1.7 million federal. Long-term debt: $720,000.
Spent $6.6 million — $5.2 million to run schools, about $15,308 per student, plus $208,000 on buildings and equipment. Money in: $4 million local (mostly property tax), $2 million state, $908,000 federal. Long-term debt: $525,000.
Spent $4.8 million — $4.1 million to run schools, about $18,203 per student, plus $244,000 on buildings and equipment. Money in: $3.8 million local (mostly property tax), $673,000 state, $670,000 federal. Long-term debt: $290,000.
Spent $2.3 million — $1.8 million to run schools, about $20,618 per student, plus $73,000 on buildings and equipment. Money in: $1.9 million local (mostly property tax), $401,000 state, $172,000 federal.
Spent $2.5 million — $2.3 million to run schools, about $39,759 per student, plus $15,000 on buildings and equipment. Money in: $2.2 million local (mostly property tax), $552,000 state, $55,000 federal.
Spent $181,000 — $125,000 to run schools, about $41,667 per student, plus $1,000 on buildings and equipment. Money in: $149,000 local (mostly property tax), $20,000 state, $26,000 federal.
Source: U.S. Census Bureau, 2023 Annual Survey of School System Finances. Districts are listed by the county of their main office; some serve neighboring counties too.
Source: County Health Rankings & Roadmaps 2025 (University of Wisconsin Population Health Institute), which gathers federal data (CDC, Census, and others); measures cover different recent years. Blank lines aren't reported for small counties.
Overall risk: Very Low compared with other U.S. counties. FEMA estimates natural hazards cost Mackinac County about $3.3 million a year on average in buildings, crops and lives. Ability to bounce back (community resilience): Very High; social vulnerability: Very High.
Source: FEMA National Risk Index (December 2025), expected annual loss. Ratings compare counties nationwide; they're estimates, not predictions.
63 bridges in Mackinac County: 17 in good condition, 36 fair, and 10 poor (15.9%). “Poor” means a main part — the deck, the beams, or the supports — is rated 4 or lower on the federal 0–9 scale. It doesn't mean unsafe to drive; unsafe bridges are closed.
| US-2 over CANADIAN NATIONAL RR · built 1938 | 4,114 vehicles a day |
| US-2 over BLACK RIVER · built 1939 | 3,586 vehicles a day |
| I-75 over ELMHIRST CREEK · built 1963 | 3,016 vehicles a day |
| I-75 NB over CHEESEMAN RD · built 1960 | 2,555 vehicles a day |
| I-75 SB over CHEESEMAN RD · built 1960 | 2,555 vehicles a day |
| M-123 over I-75 NB · built 1963 | 1,808 vehicles a day |
Source: Federal Highway Administration, National Bridge Inventory (2025 submission). Includes state, county and city bridges.
Federal grants paid for $5.2 million of work in Mackinac County in fiscal 2025, about $480 per resident — to the county, cities, schools, hospitals, nonprofits and others.
Source: USAspending.gov, grants by place of performance, fiscal 2025 (Oct. 2024 to Sept. 2025). Search it by county to see each award.
From Grants.gov: posted grants listing county governments as eligible, soonest deadline first; research-only and overseas programs left out; list updated 2026-10-13, refreshed weekly. 62 are open in all. Cities, towns, school districts and nonprofits have their own lists there.
Registration deadlines, early voting and polling places for Michigan are on the federal site vote.gov, which links to the state's official election office.
The budget, property tax rates, audits, local officials and offices for Mackinac County come from the county's own records, which we haven't gathered — not gathered, never hidden. See what a full county site looks like, or ask to have Mackinac County built: brayden.ozark@gmail.com.
More of Michigan: the state government and every county in Michigan.
Nearby counties: Luce County (26 mi) · Chippewa County (39 mi) · Charlevoix County (40 mi) · Emmet County (43 mi) · Schoolcraft County (44 mi) · Cheboygan County (61 mi).