57429 ZIP Code — Brentford, SD
Spink County, South Dakota
ZIP code 57429 is located in Brentford, South Dakota, within Spink County. It covers approximately 14.07 square miles and serves a population of 71 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 605.
71
population
14.07
sq mi land
Standard
ZIP type
Central (CT)
timezone
57429 ZIP code map
Cities in ZIP code 57429
Below are the cities the US Postal Service accepts for ZIP code 57429. Using any city not on this list may result in mail delivery delays.
| City | Status |
|---|---|
| Brentford | Acceptable |
Demographics
updated 05/2026
| Population | |
|---|---|
| Total population | 71 |
| Population density | 5 / sq mi |
| State FIPS | 46 |
| County FIPS | 115 |
| Geography | |
|---|---|
| Land area | 14.07 sq mi |
| Water area | 0.00 sq mi |
| Latitude | 45.1704 |
| Longitude | -98.2884 |
| Timezone | Central (CT) |
| Area code | 605 |
Total population by age
Gender
Race & ethnicity
Economics
updated 05/2026
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 65.9% | 39.1% | 41.7% |
| $50k – $100k | 13.6% | 33.1% | 33.8% |
| $100k – $200k | 18.2% | 20.0% | 20.1% |
| Over $200k | 2.3% | 7.8% | 4.4% |
Demographics & statistics
71
Population
5
People per sq mi
58.5
Median age
$63,750
Median household income
$51,011
Per capita income
$0
Median home value
$0
Median monthly rent
91.5%
Home ownership
0.0%
Poverty rate
0.0%
Unemployment
47
Housing units
26.9%
Bachelor's or higher
Age distribution
Male
Female
2
Under 5
2
1
25–34
1
3
35–44
3
3
45–54
3
11
55–59
14
6
65–74
8
2
75–84
3
4
85+
5
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 4 | 5.6% |
| 18 and over | 67 | 94.4% |
| 65 and over | 28 | 39.4% |
| Median age | 58.5 years | |
Race & ethnicity
White
100%
| Group | Count | % |
|---|---|---|
| White | 71 | 100% |
Household income
| Income range | This ZIP | County avg | State avg |
|---|---|---|---|
| Under $50k | 65.9% | 39.1% | 41.7% |
| $50k – $100k | 13.6% | 33.1% | 33.8% |
| $100k – $200k | 18.2% | 20.0% | 20.1% |
| Over $200k | 2.3% | 7.8% | 4.4% |
$10k–$15k
2.1%
$15k–$25k
19.1%
$25k–$35k
14.9%
$35k–$50k
6.4%
$50k–$75k
17.0%
$75k–$100k
8.5%
$100k–$150k
10.6%
$150k–$200k
17.0%
$200k+
4.3%
| Range | % of households |
|---|---|
| $10k–$15k | 2.1% |
| $15k–$25k | 19.1% |
| $25k–$35k | 14.9% |
| $35k–$50k | 6.4% |
| $50k–$75k | 17.0% |
| $75k–$100k | 8.5% |
| $100k–$150k | 10.6% |
| $150k–$200k | 17.0% |
| $200k+ | 4.3% |
| Median income | $63,750 |
Housing
Home values
Under $50k
48.8%
$50k–$100k
16.3%
$100k–$150k
9.3%
$200k–$300k
20.9%
$500k–$1M
4.7%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $0 |
| Median rent / month | $0 |
| Owner occupied | 91.5% |
| Renter occupied | 8.5% |
| Vacant | 7.8% |
| Single-family detached | 62.7% |
| Large apartment buildings | 0.0% |
| Mobile homes | 37.3% |
| Median rooms | 6.0 |
| Avg household size (owned) | 1.56 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.0% |
| 2010–2019 | 3.9% |
| 2000–2009 | 0.0% |
| 1990–1999 | 23.5% |
| 1980–1989 | 13.7% |
| 1970–1979 | 5.9% |
| 1960–1969 | 0.0% |
| 1950–1959 | 2.0% |
| 1940–1949 | 11.8% |
| 1939 or earlier | 39.2% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 0.0% |
| 1 bedroom | 0.0% |
| 2 bedrooms | 17.6% |
| 3 bedrooms | 49.0% |
| 4 bedrooms | 33.3% |
| 5+ bedrooms | 0.0% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 0.0% |
| 1 vehicle | 25.5% |
| 2 vehicles | 25.5% |
| 3 or more | 48.9% |
Heating fuel
| Fuel type | % |
|---|---|
| Electricity | 8.5% |
| Propane / LP gas | 78.7% |
| Fuel oil | 12.8% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 19 | 40.4% |
| Cohabiting couple | 1 | 2.1% |
| Male householder, no spouse | 10 | 21.3% |
| Female householder, no spouse | 17 | 36.2% |
| Households with children under 18 | 4 | 8.5% |
| Households with seniors (65+) | 18 | 38.3% |
| Average household size | 1.51 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 0.0% | 26.3% |
| Married | 62.1% | 52.6% |
| Separated | 0.0% | 0.0% |
| Widowed | 3.4% | 13.2% |
| Divorced | 34.5% | 7.9% |
Education
Less than 9th grade
0.0%
Some HS, no diploma
11.9%
HS graduate
17.9%
Some college, no degree
22.4%
Associate's degree
20.9%
Bachelor's degree
20.9%
Graduate / professional
6.0%
| Metric | % |
|---|---|
| HS diploma or higher | 88.1% |
| Bachelor's or higher | 26.9% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 0 | 0.0% |
| Kindergarten | 0 | 0.0% |
| Elementary school | 0 | 0.0% |
| High school | 0 | 0.0% |
| College / grad school | 0 | 0.0% |
Employment
Industry of employment
Professional & management
20.9%
Construction
18.6%
Wholesale trade
18.6%
Education & healthcare
14.0%
Agriculture & mining
9.3%
Manufacturing
9.3%
Finance & real estate
7.0%
Arts, food & hospitality
2.3%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 23.3% |
| Service | 2.3% |
| Sales & office | 27.9% |
| Natural resources & construction | 18.6% |
| Production & transportation | 27.9% |
Employment type
| Type | % |
|---|---|
| Private sector | 88.4% |
| Government | 0.0% |
| Self-employed | 11.6% |
| Unpaid family workers | 0.0% |
Commute
| Method | % |
|---|---|
| Drive alone | 58.1% |
| Carpool | 16.3% |
| Public transit | 0.0% |
| Walk | 4.7% |
| Work from home | 20.9% |
| Other means | 0.0% |
| Avg commute (minutes) | 28.8 |
Poverty
All people
0.0%
Under 18 years
0.0%
18 and over
0.0%
Married-couple families
0.0%
Female-led households
0.0%
Income support
| Source | % of households |
|---|---|
| Social Security | 38.3% |
| Retirement income | 21.3% |
| Supplemental Security | 0.0% |
| Cash public assistance | 0.0% |
| Food stamps / SNAP | 0.0% |
Health indicators
| Condition | % |
|---|---|
| Obesity | 35.1% |
| High blood pressure | 29.0% |
| High cholesterol | 31.0% |
| Diabetes | 8.7% |
| Heart disease | 6.1% |
| Stroke | 2.9% |
| Asthma | 9.3% |
| Arthritis | 23.0% |
| Kidney disease | 2.7% |
| Pulmonary disease | 6.5% |
| Cancer | 6.5% |
| Behavior / access | % |
|---|---|
| Smoking | 19.6% |
| Binge drinking | 21.1% |
| No physical activity | 23.5% |
| Less than 7 hrs sleep | 28.0% |
| Depression | 17.2% |
| Fair or poor health | 11.9% |
| Poor mental health | 11.8% |
| Poor physical health | 9.2% |
| No health insurance | 13.3% |
| Visited doctor (checkup) | 72.3% |
| Visited dentist | 66.0% |
| Cholesterol screening | 86.0% |
| Teeth loss | 14.5% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 7 | 10.4% |
| Disability | % |
|---|---|
| Any disability | 5.6% |
| Under 18 | 0.0% |
| 18–64 years | 0.0% |
| 65 and over | 14.3% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 85.9% |
| Public insurance | 39.4% |
| No insurance | 2.8% |
| Uninsured under 19 | 0.0% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 67 | 94.4% |
| Spanish | 0 | 0.0% |
| Other Indo-European | 0 | 0.0% |
| Asian & Pacific Islander | 0 | 0.0% |
| Other languages | 0 | 0.0% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 71 | 100.0% |
| Born in same state | 71 | 100.0% |
| Born in different state | 57 | 80.3% |
| Foreign born | 0 | 0.0% |
| Naturalized citizen | 0 | 0.0% |
| Not a US citizen | 0 | 0.0% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| Italian | 12 | 16.9% |
| Polish | 11 | 15.5% |
| Ancestry | Count | % |
|---|---|---|
| English | 4 | 5.6% |
| French | 3 | 4.2% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 66.2% |
| Internet access | 93.6% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 57429
What city is ZIP code 57429 in?
ZIP code 57429 is primarily assigned to Brentford, South Dakota.
What county is ZIP code 57429 in?
ZIP code 57429 falls within Spink County, South Dakota.
Does ZIP code 57429 have an older population?
39% of residents in ZIP code 57429 are 65 or older, above the national average of ~17%.
Is ZIP code 57429 mostly owner-occupied?
92% of occupied units in ZIP code 57429 are owner-occupied, well above the national average.
Does ZIP code 57429 have a large retiree population?
38% of households in ZIP code 57429 receive Social Security income, suggesting a significant retiree or disability population.
Does ZIP code 57429 have a large veteran population?
10% of civilians in ZIP code 57429 are veterans, above the national average of ~7%.
What timezone is ZIP code 57429 in?
ZIP code 57429 observes the CST timezone.