54423 ZIP Code — Custer, WI
Portage County, Wisconsin
ZIP code 54423 is located in Custer, Wisconsin, within Portage County. It covers approximately 48.34 square miles and serves a population of 2,140 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 715.
About ZIP code 54423
The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1990s, giving the area an established character. Median home value is $275,800. Owner-occupancy is high at 97%, well above the national average.
Median household income is $112,083. The poverty rate of 4% is below the national average.
The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 27 minutes is near the national average.
Educational attainment is near the national average, with 30% of residents holding a bachelor's degree or higher.
2,140
population
48.34
sq mi land
Standard
ZIP type
Central (CT)
timezone
54423 ZIP code map
Cities in ZIP code 54423
Below are the cities the US Postal Service accepts for ZIP code 54423. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Custer | Acceptable |
| Custer | Preferred |
Nearby ZIP codes
54407 Amherst Junction (5.8 mi)
54482 Stevens Point (5.9 mi)
54473 Rosholt (6.4 mi)
54481 Stevens Point (8.5 mi)
54492 Stevens Point (9.5 mi)
54945 Iola (12.3 mi)
54467 Plover (12.7 mi)
54406 Amherst (12.8 mi)
54977 Scandinavia (14 mi)
54440 Hatley (16.1 mi)
54427 Eland (16.9 mi)
54443 Junction City (17.3 mi)
Demographics
updated 05/2026
| Population | |
|---|---|
| Total population | 2,140 |
| Population density | 44 / sq mi |
| State FIPS | 55 |
| County FIPS | 097 |
| Geography | |
|---|---|
| Land area | 48.34 sq mi |
| Water area | 0.58 sq mi |
| Latitude | 44.5827 |
| Longitude | -89.3995 |
| Timezone | Central (CT) |
| Area code | 715 |
Total population by age
Gender
Race & ethnicity
Economics
updated 05/2026
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 20.2% | 40.3% | 39.4% |
| $50k – $100k | 29.5% | 33.5% | 33.0% |
| $100k – $200k | 44.5% | 22.3% | 22.4% |
| Over $200k | 5.8% | 3.9% | 5.2% |
Demographics & statistics
2,140
Population
44
People per sq mi
47.3
Median age
$112,083
Median household income
$42,985
Per capita income
$275,800
Median home value
$788
Median monthly rent
96.5%
Home ownership
4.2%
Poverty rate
1.8%
Unemployment
805
Housing units
30.3%
Bachelor's or higher
Age distribution
Male
Female
43
Under 5
38
60
5–9
53
53
10–14
47
71
15–19
62
73
20–24
64
87
25–34
77
153
35–44
135
141
45–54
125
181
55–59
159
92
60–64
81
143
65–74
126
25
75–84
22
15
85+
14
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 390 | 18.2% |
| 18 and over | 1,750 | 81.8% |
| 65 and over | 345 | 16.1% |
| Median age | 47.3 years | |
Race & ethnicity
White
99.5%
Native Hawaiian / Pacific Islander
0.3%
Asian
0.1%
Two or more races
0.1%
| Group | Count | % |
|---|---|---|
| White | 2,129 | 99.5% |
| Native Hawaiian / Pacific Islander | 6 | 0.3% |
| Asian | 3 | 0.1% |
| Two or more races | 2 | 0.1% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 20.2% | 40.3% | 39.4% |
| $50k – $100k | 29.5% | 33.5% | 33.0% |
| $100k – $200k | 44.5% | 22.3% | 22.4% |
| Over $200k | 5.8% | 3.9% | 5.2% |
Under $10k
4.4%
$10k–$15k
0.4%
$15k–$25k
1.9%
$25k–$35k
3.1%
$35k–$50k
4.8%
$50k–$75k
18.8%
$75k–$100k
8.2%
$100k–$150k
28.5%
$150k–$200k
21.8%
$200k+
8.2%
| Range | % of households |
|---|---|
| Under $10k | 4.4% |
| $10k–$15k | 0.4% |
| $15k–$25k | 1.9% |
| $25k–$35k | 3.1% |
| $35k–$50k | 4.8% |
| $50k–$75k | 18.8% |
| $75k–$100k | 8.2% |
| $100k–$150k | 28.5% |
| $150k–$200k | 21.8% |
| $200k+ | 8.2% |
| Median income | $112,083 |
Housing
Home values
Under $50k
1.3%
$50k–$100k
2.1%
$100k–$150k
6.4%
$150k–$200k
13.3%
$200k–$300k
37.6%
$300k–$500k
25.4%
$500k–$1M
12.6%
$1M+
1.2%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $275,800 |
| Median rent / month | $788 |
| Owner occupied | 96.5% |
| Renter occupied | 3.5% |
| Vacant | 7.2% |
| Single-family detached | 95.8% |
| Large apartment buildings | 0.0% |
| Mobile homes | 0.5% |
| Median rooms | 6.6 |
| Avg household size (owned) | 2.78 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.0% |
| 2010–2019 | 5.6% |
| 2000–2009 | 17.5% |
| 1990–1999 | 26.8% |
| 1980–1989 | 13.5% |
| 1970–1979 | 11.7% |
| 1960–1969 | 5.3% |
| 1950–1959 | 2.9% |
| 1940–1949 | 3.5% |
| 1939 or earlier | 13.2% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 1.7% |
| 1 bedroom | 1.2% |
| 2 bedrooms | 15.7% |
| 3 bedrooms | 46.9% |
| 4 bedrooms | 25.0% |
| 5+ bedrooms | 9.5% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 0.5% |
| 1 vehicle | 7.1% |
| 2 vehicles | 34.2% |
| 3 or more | 58.2% |
Heating fuel
| Fuel type | % |
|---|---|
| Utility gas | 35.1% |
| Electricity | 1.3% |
| Propane / LP gas | 46.5% |
| Fuel oil | 4.3% |
| Wood | 10.5% |
| No fuel used | 0.5% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 620 | 80.3% |
| Cohabiting couple | 21 | 2.7% |
| Male householder, no spouse | 99 | 12.8% |
| Female householder, no spouse | 32 | 4.1% |
| Households with children under 18 | 213 | 27.6% |
| Households with seniors (65+) | 208 | 26.9% |
| Average household size | 2.77 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 25.7% | 16.7% |
| Married | 67.3% | 76.8% |
| Separated | 0.0% | 0.0% |
| Widowed | 1.4% | 1.6% |
| Divorced | 5.7% | 4.9% |
Education
Less than 9th grade
0.6%
Some HS, no diploma
4.3%
HS graduate
36.6%
Some college, no degree
13.8%
Associate's degree
14.3%
Bachelor's degree
23.4%
Graduate / professional
7.0%
| Metric | % |
|---|---|
| HS diploma or higher | 95.1% |
| Bachelor's or higher | 30.3% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 19 | 4.0% |
| Kindergarten | 31 | 6.6% |
| Elementary school | 154 | 32.6% |
| High school | 124 | 26.2% |
| College / grad school | 145 | 30.7% |
Employment
Industry of employment
Education & healthcare
18.8%
Finance & real estate
13.3%
Professional & management
11.5%
Arts, food & hospitality
10.9%
Transportation & utilities
10.0%
Manufacturing
9.4%
Agriculture & mining
6.2%
Retail trade
5.9%
Other services
5.2%
Construction
4.8%
Wholesale trade
2.0%
Public administration
1.4%
Information
0.9%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 41.0% |
| Service | 12.2% |
| Sales & office | 14.9% |
| Natural resources & construction | 14.1% |
| Production & transportation | 17.8% |
Employment type
| Type | % |
|---|---|
| Private sector | 87.3% |
| Government | 8.5% |
| Self-employed | 4.1% |
| Unpaid family workers | 0.0% |
Commute
| Method | % |
|---|---|
| Drive alone | 78.9% |
| Carpool | 4.7% |
| Public transit | 0.0% |
| Walk | 0.3% |
| Work from home | 15.1% |
| Other means | 0.9% |
| Avg commute (minutes) | 26.9 |
Poverty
All people
4.2%
Under 18 years
1.3%
18 and over
4.9%
Married-couple families
3.2%
Female-led households
0.0%
Income support
| Source | % of households |
|---|---|
| Social Security | 29.9% |
| Retirement income | 26.0% |
| Supplemental Security | 0.8% |
| Cash public assistance | 0.5% |
| Food stamps / SNAP | 1.3% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 32.4% |
| High blood pressure | 29.6% |
| High cholesterol | 34.3% |
| Diabetes | 8.4% |
| Heart disease | 5.6% |
| Stroke | 2.6% |
| Asthma | 9.3% |
| Arthritis | 23.2% |
| Kidney disease | 2.5% |
| Pulmonary disease | 5.8% |
| Cancer | 6.6% |
| Behavior / access | % |
|---|---|
| Smoking | 17.0% |
| Binge drinking | 26.0% |
| No physical activity | 17.1% |
| Less than 7 hrs sleep | 30.3% |
| Depression | 20.2% |
| Fair or poor health | 10.9% |
| Poor mental health | 12.9% |
| Poor physical health | 9.3% |
| No health insurance | 9.2% |
| Visited doctor (checkup) | 72.2% |
| Visited dentist | 71.1% |
| Cholesterol screening | 88.3% |
| Teeth loss | 10.3% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 97 | 5.5% |
| Disability | % |
|---|---|
| Any disability | 5.3% |
| Under 18 | 0.0% |
| 18–64 years | 3.2% |
| 65 and over | 19.7% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 84.5% |
| Public insurance | 22.4% |
| No insurance | 1.9% |
| Uninsured under 19 | 3.0% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 2,059 | 96.2% |
| Spanish | 27 | 1.3% |
| Other Indo-European | 15 | 0.7% |
| Asian & Pacific Islander | 9 | 0.4% |
| Other languages | 3 | 0.1% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 2,128 | 99.4% |
| Born in same state | 2,128 | 99.4% |
| Born in different state | 1,735 | 81.1% |
| Foreign born | 0 | 0.0% |
| Naturalized citizen | 12 | 0.6% |
| Not a US citizen | 4 | 33.3% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Italian | 138 | 6.4% |
| Polish | 108 | 5% |
| Arab | 92 | 4.3% |
| English | 74 | 3.5% |
| Ancestry | Count | % |
|---|---|---|
| French | 68 | 3.2% |
| Dutch | 6 | 0.3% |
| Irish | 3 | 0.1% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 36.1% |
| Internet access | 95.7% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 54423
What city is ZIP code 54423 in?
ZIP code 54423 is primarily assigned to Custer, Wisconsin.
What county is ZIP code 54423 in?
ZIP code 54423 falls within Portage County, Wisconsin.
Is ZIP code 54423 mostly owner-occupied?
97% of occupied units in ZIP code 54423 are owner-occupied, well above the national average.
What is the median household income in ZIP code 54423?
The median household income in ZIP code 54423 is $112,083, above the national median of ~$75,000.
What is the population of ZIP code 54423?
ZIP code 54423 has an estimated population of 2,140 residents, with a density of 44 people per square mile.
What is the typical home value in ZIP code 54423?
The median home value in ZIP code 54423 is $275,800.
What timezone is ZIP code 54423 in?
ZIP code 54423 observes the CST timezone.