Spencer Town, WI

Town in Marathon County, WI, US

By Neilsberg Research

Last updated May 1, 2026

Key Indicators

A quick look at key numbers

Population

1,679

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

Median Age

years ∙ half population younger than 32, half older

Diversity Index

7.8%

chance two random people differ in race and ethnicity

Nativity

1.7%

foreign-born population

98.3%Native

1.7% Foreign-born

Geographic Context

Location, size, and surroundings

About

Spencer Town is a town in Marathon County, Wisconsin, United States.

Location

Town in Marathon County, WI, US

Co-ordinates

DEC44.725252° N, 90.248365° W

DMS44° 43′ 30.91″ N, 90° 14′ 54.11″ W

Population Density & area

53.3/sq mi (20.6/km²)

Total Area

31.7 sq mi (82 km²)

Land Area

31.5 sq mi (81.5 km²) · 99.35%

Water Area

0.2 sq mi (0.5 km²) · 0.65%

Demographics & Living

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

Population Composition

Key characteristics of the population

Sex Distribution

51.6% male

Male 51.6%

Female 48.4%

males per 100 females

Spencer Town 106.8

Marathon County 101.9

Wisconsin 100.3

Nativity

1.7%

foreign-born population

98.3%Native

1.7% Foreign-born

% Foreign-born

Spencer Town 1.7%

Marathon County 4.3%

Wisconsin 5.2%

Age Distribution

How the population is spread across age groups

Median Age

years ∙ half population younger than 32, half older

Spencer Town

Marathon County

41.3

Wisconsin

40.2

Dependency ratio

62.4

dependents per 100 working-age adults

Spencer Town 62.4

Marathon County 71.5

Wisconsin 66.4

AGE DISTRIBUTION

Distribution of age group

Median age

	Spencer Town	Marathon County	Wisconsin
Age Group
Children (Under 18)	25.6%	22.5%	21.4%
Working age (18-64)	61.5%	58.3%	60.1%
Senior (65+)	12.9%	19.2%	18.5%
Dependency ratio
Total dependency ratio	62.4	71.5	66.4
Child dependency ratio	41.5	38.6	35.6
Old-age dependency ratio	20.9	32.9	30.8

Racial & Ethnic Composition

Racial and ethnic makeup and how it compares

Race & Ethnicity

White

96%

Black

0.3%

Asian

1.1%

Hispanic

0.8%

Other

1.8%

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

7.8%

chance two random people differ in race and ethnicity

Spencer Town 7.8%

Marathon County 25.1%

Wisconsin 37%

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 Spencer Town population

	Spencer Town	Marathon County	Wisconsin
Hispanic or Latino	0.8%	3.5%	8%
Mexican	0%	2.4%	5.4%
Puerto Rican	0%	0.2%	1.1%
Cuban	0%	0%	0.1%
Other Hispanic / Latino	0.8%	0.8%	1.3%
Not Hispanic or Latino	99.2%	96.5%	92%
One race	97.6%	92.9%	88.3%
White	96%	86.2%	78.6%
Black or African American	0.3%	0.6%	5.9%
American Indian and Alaska Native	0.2%	0.1%	0.5%
Asian	1.1%	5.7%	2.9%
Native Hawaiian and Other Pacific Islander	0%	0%	0%
Some Other Race	0%	0.3%	0.3%
Two or more races (Multiracial)	1.6%	3.6%	3.7%

Household & Families Composition

Household size, type, and family structure

Household structure

79.1% family

Family 79.1%

Non family 20.9%

% family households

Spencer Town 79.1%

Marathon County 63.4%

Wisconsin 60.5%

Average household size

2.97

persons per household

Spencer Town

2.97

Marathon County

2.36

Wisconsin

2.33

Household & Family COMPOSITION

Households

Percentage of Spencer Town population

	Spencer Town	Marathon County	Wisconsin
Total households	556	57,866	2,479,480
Average houshold size	2.97	2.36	2.33
Family households	440	36,705	1,500,296
Average family size	3.38	2.91	2.95
Married couple family	393	29,673	1,161,326
Other families	47	7,032	338,970
Male householder	20	2,908	112,650
Female householder	27	4,124	226,320
Non-family households	116	21,161	979,184
One-person households	90	16,435	781,452
Male householder	46	7,650	373,428
Senior (65+) living alone	18	2,263	109,743
Female householder	44	8,785	408,024
Senior (65+) living alone	15	5,104	210,915
Other living arrangements	26	4,726	197,732

Housing Profile

Housing stock, ownership, rentals, and cost burdens

Total housing units

580

housing units

Spencer Town 580

Marathon County 60,910

Wisconsin 2,778,572

Occupancy status

95.9% occupied

Occupied 95.9%

Vacant 4.1%

vacancy rate

Spencer Town 4.1%

Marathon County 5%

Wisconsin 10.8%

Housing Characteristics

How the housing supply is structured and used

Types of Housing unit

84.5%

Single family houses

84.5%

Apartments in multi-unit structures

12.2%

Mobile homes

3.3%

Boat, RV, van, etc

Median Year Built

1993

Half of houses were built before 1993, and half after.

Historic ∙ 1939 or earlier

16.6%

Postwar & mid-century ∙ 1940 - 1969

14.3%

Late 20th century ∙ 1970 - 1999

28.1%

Modern ∙ 2000 or later

41%

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

Housing Characteristics

Units, rooms & bedrooms

Physical characteristics of housing units

	Spencer Town	Marathon County	Wisconsin
Rooms per unit
Median rooms	7	6	5.6
1–3 rooms	0.3%	10%	13.2%
4–6 rooms	42%	49.4%	52%
7+ rooms	57.7%	40.6%	34.9%
Bedrooms
No bedroom / studio	0.3%	0.8%	2.1%
1 bedroom	0.9%	7.2%	10%
2 bedrooms	13.1%	25.4%	27.8%
3 bedrooms	45.3%	42.2%	40%
4+ bedrooms	40.4%	24.4%	20.1%
At a glance
Median year built	1993	1978	1975
Total housing units	580	60,910	2,778,572

Occupancy Profile

Who is inside and how they use it

Homeownership

91.5% owners

Renter-occupied 8.5%

Owner-occupied 91.5%

homeownership rate

Spencer Town 91.5%

Marathon County 73.3%

Wisconsin 67.8%

Average household size

2.98

Owner-occupied

2.87

Renter-occupied

owner-occupied average size

Spencer Town 2.98

Marathon County 2.51

Wisconsin 2.49

Housing Characteristics

Occupied unit characteristics

Tenure, crowding, and utilities

	Spencer Town	Marathon County	Wisconsin
Total occupied units	556	57,866	2,479,480
Year moved in
2020 or later	23.4%	21%	23.1%
2010 to 2019	26.1%	36.4%	38%
2000 to 2009	25.5%	17.9%	17.1%
1999 or earlier	25%	24.7%	21.8%
Occupants per room
1.00 or fewer	99.1%	98.7%	98.3%
1.01 to 1.50	0.5%	1%	1.2%
1.51 or more	0.4%	0.3%	0.5%
Vehicles availability
No vehicles	3.4%	4.8%	6.4%
1 vehicle	9.2%	29.6%	33%
2 vehicles	39.7%	41.3%	39.5%
3 or more vehicles	47.7%	24.3%	21.1%
House heating fuel used
Gas	72.2%	73%	76.6%
Electricity	5.9%	16.5%	17.8%
Solar	0%	0.1%	0.1%
Fuel oil, kerosene etc	13.7%	3.3%	1.4%
All other fuels	7.7%	6.4%	3.5%
No fuel used	0.5%	0.6%	0.6%
Selected characteristics
Lacking complete plumbing	1.8%	0.1%	0.4%
Lacking complete kitchen	0.5%	0.5%	0.8%
No telephone service available	0.5%	0.5%	0.8%

Housing Value

What owner-occupied units are worth

Median home value

$268,600

owner-occupied units

Median value(USD)

Spencer Town

$268,600

Marathon County

$219,600

Wisconsin

$266,500

Housing Cost Burden

19%

of homeowners with a mortgage are cost-burdened

% Cost-Burdened Households

Owners with a mortgage

19%

Owners without a mortgage

13.5%

Renters

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

	Spencer Town	Marathon County	Wisconsin
Property value
Median Value	$268,600	$219,600	$266,500
Under $100,000	14.4%	10.9%	9.1%
$100,000 - $200,000	15.9%	32.7%	23%
$200,000 - $300,000	27.9%	28.5%	25.5%
$300,000 - $500,000	34.8%	20.5%	29.4%
$500,000 - $1,000,000	7.1%	6.5%	11.4%
$1,000,000 and more	0%	0.8%	1.7%
Owner-occupied households
With a mortgage	65%	58.8%	61.1%
Without a mortgage	35%	41.2%	38.9%
Median monthly owner costs
With a mortgage	$1,743	$1,463	$1,689
Without a mortgage	$794	$589	$659
Gross rent
Median rent	$868	$999	$1,087

Education Profile

How educated is the community and how education pays off

Adults with a college degree

21.8%

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

Spencer Town 21.8%

Marathon County 28.1%

Wisconsin 33.4%

Adults without a high school diploma

19.4%

of adults (25+) without a high school diploma

Spencer Town 19.4%

Marathon County 6.7%

Wisconsin 6.4%

School Enrollment

Who is enrolled in school and at what level

School enrollment

385

population (age 3+) enrolled in school

Nursery / Preschool

5.5%

K–12

76.6%

College / Undergraduate

13.8%

Graduate / Professional

4.2%

College-going rate (18-24 yr olds)

19.6%

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

Spencer Town

19.6%

Marathon County

22%

Wisconsin

39.8%

Enrollment & school type

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

Population 3+ currently enrolled in a school

	Spencer Town	Marathon County	Wisconsin
Total enrolled (age 3+)	385	29,464	1,356,381
Nursery / preschool	5.5%	6%	5.3%
K–12	76.6%	77.6%	69.3%
Kindergarten	1.6%	4.3%	5.5%
Elementary: Grades 1–4	16.4%	23.2%	20.2%
Elementary: Grades 5–8	24.7%	25.9%	21.3%
High School: Grades 9–12	34%	24.2%	22.3%
College or graduate school	17.9%	16.4%	25.3%
College, undergraduate	13.8%	13.2%	20.7%
Graduate, professional school	4.2%	3.1%	4.7%
College-going rate · 18-24 yr olds	19.6%	22%	39.8%
School type
Public school	80.3%	85.7%	82.4%
Private school	19.7%	14.3%	17.6%

Education Attainment by Level & Gender

What is the highest level of education completed among adults

Education attainment

1,056

population 25 years and over

Total adults (25+)

Less than 9th grade

9th-12th, no diploma

14.4%

HS graduate

34.4%

Some college no degree

16.6%

Associates degree

7.9%

Bachelors degree

14.7%

Graduate or professional degree

7.1%

Attainment by gender

Male vs Female

Adults (25+) · Share within each education level

% male · % female

Less than 9th grade

45.3% · 54.7%

9th-12th, no diploma

59.9% · 40.1%

HS graduate

57.3% · 42.7%

Some college no degree

53.1% · 46.9%

Associates degree

42.2% · 57.8%

Bachelors degree

36.8% · 63.2%

Graduate or professional degree

34.7% · 65.3%

Educational Attainment Overview

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

Highest credential completed · adults 25+

	Spencer Town	Marathon County	Wisconsin
Population (25+)	1,056	97,134	4,099,973
Less than 9th grade	5%	3%	2.3%
9th–12th, no diploma	14.4%	3.7%	4.1%
High school diploma or GED	34.4%	33%	29.4%
Some college, no degree	16.6%	18.7%	19.5%
Associate's degree	7.9%	13.5%	11.3%
Bachelor's degree or higher	21.8%	28.1%	33.4%
Bachelor's degree	14.7%	19.7%	22%
Graduate or professional	7.1%	8.4%	11.4%
High School or higher	80.6%	93.3%	93.6%

Earnings by education level

percentage as applicable

Median Earnings

$57,995

Median earnings for adults 25+, by level

Less than HS graduate

$53,750

HS graduate

$46,406

Some college or associates

$58,846

Bachelors degree

$79,167

Graduate or professional degree

$67,500

Poverty Rate

5.7%

for ages 25+, with bachelors degree or higher

Less than HS graduate

3.9%

HS graduate

Some college or associates

5.8%

Bachelors degree or higher

5.7%

Outcomes by Education Level

Earnings and poverty rates across education levels (25+)

Adults 25+

	Spencer Town	Marathon County	Wisconsin
Median earnings
Population 25+, with earnings	$57,995	$51,449	$53,060
Less than high school graduate	$53,750	$42,699	$36,585
High school graduate (includes equivalency)	$46,406	$42,875	$42,367
Some college or associate's degree	$58,846	$49,915	$49,438
Bachelor's degree	$79,167	$62,021	$66,239
Graduate or professional degree	$67,500	$74,903	$79,916
Poverty rates
Less than high school graduate	3.9%	23.5%	22.6%
High school graduate (includes equivalency)	5%	9.7%	12.2%
Some college or associate's degree	5.8%	6.5%	7.9%
Bachelor's degree or higher	5.7%	3.5%	3.7%

Insights for Spencer Town, by topic

Income By year By race By age By gender

Population By year By race By age By gender

About Neilsberg Research

Neilsberg Research team are data scientists with expertise in processing, analysis and visualization of big data helping small businesses make right decisions.

Cite this page

Citation style

Url to be used as reference

This article is for informational purposes only and is not intended to be legal or tax advice. We recommend that you consult with a qualified professional such as a lawyer or accountant before making a decision. Many of the products and services featured here are from our affiliate partners. We may receive commissions on purchases made from our chosen links. Read advertiser disclosure.