St. Ignace Township, MI

Township in Mackinac County, MI, US

By Neilsberg Research

Last updated May 1, 2026

Key Indicators

A quick look at key numbers

Population

1,093

Source: U.S. Census Bureau American Community Survey (ACS) 2020-2024 5-Year Estimates

Median Age

42.8

years ∙ half population younger than 42.8, half older

Diversity Index

57.3%

chance two random people differ in race and ethnicity

Nativity

1.9%

foreign-born population

98.1%Native

1.9% Foreign-born

Geographic Context

Location, size, and surroundings

About

St. Ignace Township is a township in Mackinac County, Michigan, United States.

Location

Township in Mackinac County, MI, US

Co-ordinates

DEC46.042356° N, 84.686657° W

DMS46° 02′ 32.48″ N, 84° 41′ 11.97″ W

Population Density & area

11.23/sq mi (4.34/km²)

Total Area

142 sq mi (367.8 km²)

Land Area

97.3 sq mi (252 km²) · 68.5%

Water Area

44.7 sq mi (115.8 km²) · 31.5%

Demographics & Living

Who lives here, how households are formed, and community composition

Population Composition

Key characteristics of the population

Sex Distribution

49.6% male

Male 49.6%

Female 50.4%

males per 100 females

St. Ignace Township 98.4

Mackinac County 100.6

Michigan 98.2

Nativity

1.9%

foreign-born population

98.1%Native

1.9% Foreign-born

% Foreign-born

St. Ignace Township 1.9%

Mackinac County 5.9%

Michigan 7.2%

Age Distribution

How the population is spread across age groups

Median Age

42.8

years ∙ half population younger than 42.8, half older

St. Ignace Township

42.8

Mackinac County

Michigan

40.2

Dependency ratio

62.9

dependents per 100 working-age adults

St. Ignace Township 62.9

Mackinac County 80.8

Michigan 66.3

AGE DISTRIBUTION

Distribution of age group

Median age

	St. Ignace Township	Mackinac County	Michigan
Age Group
Children (Under 18)	23%	15%	21.2%
Working age (18-64)	61.4%	55.3%	60.2%
Senior (65+)	15.6%	29.7%	18.6%
Dependency ratio
Total dependency ratio	62.9	80.8	66.3
Child dependency ratio	37.4	27.1	35.3
Old-age dependency ratio	25.5	53.7	31

Racial & Ethnic Composition

Racial and ethnic makeup and how it compares

Race & Ethnicity

White

55.9%

Black

Asian

1.2%

Hispanic

1.8%

Other

41.1%

Note: White, Black, and Asian refer to individuals belonging to a single race and not of Hispanic origin. Hispanics may be of any race.

Diversity Index

57.3%

chance two random people differ in race and ethnicity

St. Ignace Township 57.3%

Mackinac County 46.7%

Michigan 45.2%

Note: The Diversity Index (DI), based on the Blau Index, measures the probability that two randomly selected individuals differ in race and ethnicity. Values range from 0 (no diversity) to 1 (high diversity) and are shown as percentages.

RACIAL & ETHNIC COMPOSITION

Race & Ethnicity

Percentage of St. Ignace Township population

	St. Ignace Township	Mackinac County	Michigan
Hispanic or Latino	1.8%	2.3%	5.9%
Mexican	0.5%	1.4%	4%
Puerto Rican	0%	0.1%	0.5%
Cuban	0%	0.1%	0.2%
Other Hispanic / Latino	1.4%	0.7%	1.2%
Not Hispanic or Latino	98.2%	97.7%	94.1%
One race	90%	90.2%	89.6%
White	55.9%	71.1%	72.4%
Black or African American	0%	4.8%	13.1%
American Indian and Alaska Native	32.8%	13.7%	0.3%
Asian	1.2%	0.6%	3.4%
Native Hawaiian and Other Pacific Islander	0%	0%	0%
Some Other Race	0%	0.1%	0.5%
Two or more races (Multiracial)	8.2%	7.5%	4.5%

Household & Families Composition

Household size, type, and family structure

Household structure

65.5% family

Family 65.5%

Non family 34.5%

% family households

St. Ignace Township 65.5%

Mackinac County 61.9%

Michigan 62.4%

Average household size

2.17

persons per household

St. Ignace Township

2.17

Mackinac County

2.03

Michigan

2.42

Household & Family COMPOSITION

Households

Percentage of St. Ignace Township population

	St. Ignace Township	Mackinac County	Michigan
Total households	504	5,199	4,076,369
Average houshold size	2.17	2.03	2.42
Family households	330	3,216	2,545,621
Average family size	2.49	2.45	3.05
Married couple family	200	2,530	1,878,767
Other families	130	686	666,854
Male householder	35	285	199,150
Female householder	95	401	467,704
Non-family households	174	1,983	1,530,748
One-person households	161	1,702	1,250,418
Male householder	96	833	583,425
Senior (65+) living alone	41	338	188,594
Female householder	65	869	666,993
Senior (65+) living alone	32	425	349,637
Other living arrangements	13	281	280,330

Housing Profile

Housing stock, ownership, rentals, and cost burdens

Total housing units

720

housing units

St. Ignace Township 720

Mackinac County 10,597

Michigan 4,622,236

Occupancy status

70% occupied

Occupied 70%

Vacant 30%

vacancy rate

St. Ignace Township 30%

Mackinac County 50.9%

Michigan 11.8%

Housing Characteristics

How the housing supply is structured and used

Types of Housing unit

83.3%

Single family houses

83.3%

Apartments in multi-unit structures

5.8%

Mobile homes

9.6%

Boat, RV, van, etc

1.4%

Median Year Built

1991

Half of houses were built before 1991, and half after.

Historic ∙ 1939 or earlier

2.5%

Postwar & mid-century ∙ 1940 - 1969

20.5%

Late 20th century ∙ 1970 - 1999

44.1%

Modern ∙ 2000 or later

32.9%

Note: Median year built reflects occupied units only; distribution includes all units.

Housing Characteristics

Units, rooms & bedrooms

Physical characteristics of housing units

	St. Ignace Township	Mackinac County	Michigan
Rooms per unit
Median rooms	5.5	5.5	5.9
1–3 rooms	11.4%	14.1%	10.5%
4–6 rooms	61.6%	53.6%	51.9%
7+ rooms	27.1%	32.4%	37.6%
Bedrooms
No bedroom / studio	2.8%	3.1%	1.6%
1 bedroom	3.6%	9%	8.9%
2 bedrooms	37.2%	32.2%	24.6%
3 bedrooms	47.8%	38.7%	43.5%
4+ bedrooms	8.6%	17%	21.4%
At a glance
Median year built	1991	1978	1972
Total housing units	720	10,597	4,622,236

Occupancy Profile

Who is inside and how they use it

Homeownership

75.4% owners

Renter-occupied 24.6%

Owner-occupied 75.4%

homeownership rate

St. Ignace Township 75.4%

Mackinac County 77.9%

Michigan 73.2%

Average household size

2.04

Owner-occupied

2.56

Renter-occupied

owner-occupied average size

St. Ignace Township 2.04

Mackinac County 2.1

Michigan 2.54

Housing Characteristics

Occupied unit characteristics

Tenure, crowding, and utilities

	St. Ignace Township	Mackinac County	Michigan
Total occupied units	504	5,199	4,076,369
Year moved in
2020 or later	20%	22.5%	21%
2010 to 2019	30%	30.4%	39.5%
2000 to 2009	23.6%	18.9%	16%
1999 or earlier	26.4%	28.2%	23.4%
Occupants per room
1.00 or fewer	99%	98.8%	98.4%
1.01 to 1.50	1%	0.4%	1.2%
1.51 or more	0%	0.7%	0.4%
Vehicles availability
No vehicles	8.7%	10.1%	7%
1 vehicle	32.7%	33.5%	34.8%
2 vehicles	42.3%	39.4%	38.3%
3 or more vehicles	16.3%	17%	19.8%
House heating fuel used
Gas	65.9%	62.7%	83.6%
Electricity	16.1%	21.6%	12.1%
Solar	0%	0%	0%
Fuel oil, kerosene etc	0%	2.3%	0.8%
All other fuels	18.1%	12.9%	3%
No fuel used	0%	0.4%	0.5%
Selected characteristics
Lacking complete plumbing	3%	1%	0.4%
Lacking complete kitchen	0.4%	1%	0.7%
No telephone service available	0%	2.3%	0.7%

Housing Value

What owner-occupied units are worth

Median home value

$179,400

owner-occupied units

Median value(USD)

St. Ignace Township

$179,400

Mackinac County

$174,500

Michigan

$231,600

Housing Cost Burden

37.7%

of homeowners with a mortgage are cost-burdened

% Cost-Burdened Households

Owners with a mortgage

37.7%

Owners without a mortgage

25.9%

Renters

22.2%

Note: Households spending 30% or more of their income on housing costs are considered cost-burdened.

Financial characteristics

Property value and housing costs

Tenure, crowding, and utilities

	St. Ignace Township	Mackinac County	Michigan
Property value
Median Value	$179,400	$174,500	$231,600
Under $100,000	20.8%	22.1%	16.8%
$100,000 - $200,000	32.9%	33.2%	24.7%
$200,000 - $300,000	36.1%	18.6%	23.4%
$300,000 - $500,000	9.7%	17.7%	24.1%
$500,000 - $1,000,000	0.5%	7%	9.2%
$1,000,000 and more	0%	1.3%	1.6%
Owner-occupied households
With a mortgage	52.4%	45.3%	57.8%
Without a mortgage	47.6%	54.7%	42.2%
Median monthly owner costs
With a mortgage	$1,266	$1,294	$1,569
Without a mortgage	$418	$472	$602
Gross rent
Median rent	$683	$760	$1,129

Education Profile

How educated is the community and how education pays off

Adults with a college degree

14.3%

of adults 25+ with a bachelor's degree or higher

St. Ignace Township 14.3%

Mackinac County 25%

Michigan 32.4%

Adults without a high school diploma

6.9%

of adults (25+) without a high school diploma

St. Ignace Township 6.9%

Mackinac County 7.9%

Michigan 8%

School Enrollment

Who is enrolled in school and at what level

School enrollment

218

population (age 3+) enrolled in school

Nursery / Preschool

12.4%

K–12

81.2%

College / Undergraduate

6.4%

Graduate / Professional

College-going rate (18-24 yr olds)

32%

of 18-24-year-olds in college or graduate school

St. Ignace Township

32%

Mackinac County

21.7%

Michigan

41.1%

Enrollment & school type

Enrollment levels, college-going rate, and public vs private school split

Population 3+ currently enrolled in a school

	St. Ignace Township	Mackinac County	Michigan
Total enrolled (age 3+)	218	1,537	2,312,914
Nursery / preschool	12.4%	9%	5.6%
K–12	81.2%	73.1%	67.9%
Kindergarten	12.4%	4.1%	5.2%
Elementary: Grades 1–4	23.9%	21.1%	19.7%
Elementary: Grades 5–8	19.3%	22.4%	20.8%
High School: Grades 9–12	25.7%	25.5%	22.2%
College or graduate school	6.4%	17.8%	26.5%
College, undergraduate	6.4%	13.3%	21.1%
Graduate, professional school	0%	4.5%	5.4%
College-going rate · 18-24 yr olds	32%	21.7%	41.1%
School type
Public school	91.7%	85.6%	85.2%
Private school	8.3%	14.4%	14.8%

Education Attainment by Level & Gender

What is the highest level of education completed among adults

Education attainment

817

population 25 years and over

Total adults (25+)

Less than 9th grade

1.1%

9th-12th, no diploma

5.8%

HS graduate

45.5%

Some college no degree

25.5%

Associates degree

7.8%

Bachelors degree

8.7%

Graduate or professional degree

5.6%

Attainment by gender

Male vs Female

Adults (25+) · Share within each education level

% male · % female

Less than 9th grade

100% · 0%

9th-12th, no diploma

38.3% · 61.7%

HS graduate

53.2% · 46.8%

Some college no degree

58.7% · 41.3%

Associates degree

15.6% · 84.4%

Bachelors degree

18.3% · 81.7%

Graduate or professional degree

69.6% · 30.4%

Educational Attainment Overview

Distribution and key education attainment rates for adults (25+)

Highest credential completed · adults 25+

	St. Ignace Township	Mackinac County	Michigan
Population (25+)	817	8,686	7,008,507
Less than 9th grade	1.1%	2.8%	2.6%
9th–12th, no diploma	5.8%	5.1%	5.4%
High school diploma or GED	45.5%	36.7%	28%
Some college, no degree	25.5%	22.8%	21.9%
Associate's degree	7.8%	7.6%	9.8%
Bachelor's degree or higher	14.3%	25%	32.4%
Bachelor's degree	8.7%	15.7%	19.7%
Graduate or professional	5.6%	9.3%	12.7%
High School or higher	93.1%	92.2%	92.1%

Earnings by education level

percentage as applicable

Median Earnings

$40,046

Median earnings for adults 25+, by level

Less than HS graduate

$30,417

HS graduate

$33,523

Some college or associates

$50,929

Bachelors degree

$—

Graduate or professional degree

$—

Poverty Rate

for ages 25+, with bachelors degree or higher

Less than HS graduate

16.1%

HS graduate

29%

Some college or associates

13.6%

Bachelors degree or higher

Outcomes by Education Level

Earnings and poverty rates across education levels (25+)

Adults 25+

	St. Ignace Township	Mackinac County	Michigan
Median earnings
Population 25+, with earnings	$40,046	$37,048	$50,316
Less than high school graduate	$30,417	$23,103	$31,851
High school graduate (includes equivalency)	$33,523	$26,073	$37,777
Some college or associate's degree	$50,929	$45,250	$44,844
Bachelor's degree	$—	$45,417	$66,893
Graduate or professional degree	$—	$69,191	$85,195
Poverty rates
Less than high school graduate	16.1%	19.2%	27.4%
High school graduate (includes equivalency)	29%	25%	15.2%
Some college or associate's degree	13.6%	7.9%	10.3%
Bachelor's degree or higher	0%	3%	4.2%

Insights for St. Ignace Township, by topic

Income By year By race By age By gender

Population By year By race By age By gender

About Neilsberg Research

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