| City: | Brentford, South Dakota |
| County: | Spink County |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 7:49:51 AM |
| Population: | 104 [See All] |
| Area Code: | 605 |
| Classification: | PO Box |
| Coordinates: | 45.1704, -98.2884 |
| Land Area: | 14.07 sq mi |
| Quick Link: |
Brentford is a small farming community in Spink County, South Dakota, with 104 residents spread across 19.1 square miles. The post office maintains 49 PO Boxes for 42 local households, but serves a wider area beyond the town itself. With a PO Box adoption rate of 1.167, it's clear that surrounding rural residents also rely on this post office.
This is a PO Box Only Zone. There's no alternative mail delivery across the territory. While the ZIP includes both a city carrier route and a rural route, the post office remains central to mail service. Streets follow a numbered grid pattern typical of Great Plains towns, with 3rd, 4th, and 5th Streets intersecting with avenues named Gregory, McCaughey, and Main. SD Highway 20 passes through the area.
Nearly everyone here owns their home. Of the 42 occupied households, 39 are owner-occupied. The median home value sits at $112,500, and median household income is $61,250. Education levels run higher than typical for rural South Dakota, with 34% holding bachelor's degrees or higher. One notable pattern stands out: 38 workers are employed in transportation, warehousing, or utilities, an unusually high concentration for a town this size. Additionally, 24% of workers work from home, well above the national average.
Mail addressed to Brentford, SD 57429 should include a PO Box number. The town uses BRENTFORD as its preferred mailing name.
Classic Great Plains grid layout with numbered streets and named avenues, plus SD Highway 20.
ZIP Code 57429 has 104 residents and 42 households (average 2.48 persons per household). The median age is 33.8 years, younger than the state (37.7) and younger than the nation (38.8). The gender split is 54.8% male and 45.2% female, which is higher than the national male share (49.1%), making this a male-majority area. Largest groups are White (96.2%, much higher than the state average of 80.7% and well above the national average of 61.6%) and Hispanic or Latino (1.0%); Hispanic or Latino residents make up 1.0%, which is much lower than the national average (18.7%).
Explore More:Population Over TimeBy Age & GenderBy RaceBy GenderNativity & Citizenship
| 2020 Population: | 104Source: Census DHC |
| 2024 ACS Population Estimate: | 92Source: Census ACS |
| 2026 ZC Population Estimate: | 0Source: ZIP-Codes.com |
| Population Density: | 7.4 people per sq mile |
| Average Income: | $0Source: Census ACS |
| Households: | 42Source: Census DHC |
| Average House Value: | $666,666,666Source: Census ACS |
| Persons Per Household: | 2.48Source: Census DHC |
| Average Family Size: | 2.13Source: Census ACS |
| Group | 2010 | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Census ACS Population Estimate | -- | 162 | 142 | 109 | 94 | 98 | 83 | 92 | 82 | 70 | 63 | 72 | 71 | 92 | 92 |
| Decennial Census | 94 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 104 | -- | -- | -- | -- |
Median Age: 33.8
Male Median Age: 35.3
Female Median Age: 32.3
| Group | < 5 | 5-9 | 10-14 | 15-19 | 20-24 | 25-29 | 30-34 | 35-39 | 40-44 | 45-49 | 50-54 | 55-59 | 60-64 | 65-69 | 70-74 | 75-79 | 80-84 | 85+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Male | 9 | 4 | 4 | 1 | 1 | 3 | 6 | 5 | 0 | 2 | 4 | 7 | 5 | 2 | 1 | 2 | 1 | 0 |
| Female | 2 | 0 | 6 | 5 | 2 | 6 | 7 | 2 | 0 | 0 | 0 | 8 | 2 | 6 | 0 | 0 | 1 | 0 |
| Total | 11 | 4 | 10 | 6 | 3 | 9 | 13 | 7 | 0 | 2 | 4 | 15 | 7 | 8 | 1 | 2 | 2 | 0 |
| White: | 100 | 99.01% |
| Black: | 0 | 0% |
| Hispanic:* | 1 | 0.99% |
| Asian: | 0 | 0% |
| American Indian: | 0 | 0% |
| Hawaiian: | 0 | 0% |
| Other: | 0 | 0% |
| Total: | 101 | 100% |
| Gender | Count | % | Median Age |
|---|---|---|---|
| Males: | 57 | 54.81% | 35.3 years |
| Females: | 47 | 45.19% | 32.3 years |
| Total: | 104 | 100% | 33.8 years |
| Native, born in the United States: | 92 | 100.00% |
| Native, born in PR, Island Areas, or abroad: | 0 | 0.00% |
| Foreign born, naturalized U.S. citizen: | 0 | 0.00% |
| Foreign born, not a U.S. citizen: | 0 | 0.00% |
| Total Population: | 92 | 100% |
| Total Native Population: | 92 | 100.00% |
| Total Foreign-born Population: | 0 | 0.00% |
In 2024, the Median household income is $0, which is well under the national median ($80,734), is down $63,438 (100.0%) since 2011 and below its 2019 pre-pandemic level by $48,125. Family households earn a median of $0 versus $0 for nonfamily households (a difference of $0). By gender, male median income is $46,250 and female is $0, which is considerably lower than the national female median ($55,274), with a current gap of $46,250 that has widened from 2011 to 2024. The labor-force participation rate is 63.8%, which is about the same as the national rate (63.5%). The unemployment rate is 0.0%, which is considerably lower than the national rate (5.2%). The largest occupation group is Management (43.2%).
Explore More:Income Over TimeHousehold IncomeEmployment StatusBy Occupation
| Income Type | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Household Income | $63,438 | $46,250 | $40,000 | $42,500 | $38,750 | $31,875 | $41,875 | $0 | $48,125 | $34,167 | $50,750 | $63,750 | $61,250 | $0 |
| Median Family Income | $66,000 | $66,750 | $55,000 | $55,000 | $0 | $0 | $81,250 | $53,750 | $0 | $0 | $108,333 | $117,250 | $0 | $0 |
| Median NonFamily Income | $26,875 | $28,750 | $19,375 | $41,250 | $0 | $0 | $0 | $28,000 | $27,750 | $28,125 | $30,250 | $33,500 | $0 | $0 |
| Median Male Income | $48,542 | $48,333 | $58,750 | $56,667 | $0 | $43,750 | $48,750 | $48,750 | $53,750 | $59,792 | $65,000 | $66,964 | $68,333 | $46,250 |
| Median Female Income | $22,045 | $22,000 | $21,500 | $30,625 | $0 | $31,375 | $30,682 | $30,682 | $0 | $0 | $0 | $0 | $0 | $0 |
| Employed: | 44 | 63.77% |
| Unemployed: | 0 | 0.00% |
| Not In Labor Force: | 25 | 36.23% |
| Total: | 69 | 100% |
| Management, business, science, and arts: | 19 | 43.18% |
| Service: | 2 | 4.55% |
| Sales and Office: | 12 | 27.27% |
| Natural resources, construction, and maintenance: | 9 | 20.45% |
| Production, transportation, and material moving: | 2 | 4.55% |
| Total Civilian Employed Population: | 44 | 100% |
In 2024, the median home value is $0, which is much lower than the national median ($332,700), is down $45,000 (100.00%) since 2011 and below its 2019 pre-pandemic level by $73,800. The median gross rent is $0, which is well under the national median ($1,413), is down $333 (100.00%) since 2011 and above its 2019 pre-pandemic level by $0. Insufficient data for owner/renter mix. Insufficient data for vacancy rate.
Explore More:Compare Home ValueHome Value Over TimeRent & Over TimeHousing Occupancy
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Home Value | $45,000 | $34,500 | $44,300 | $37,500 | $41,300 | $35,800 | $47,500 | $45,000 | $73,800 | $55,000 | $37,500 | $0 | $112,500 | $0 |
| Less than $500: | 0 | 0.00% |
| $500 to $999: | 2 | 50.00% |
| $1,000 to $1,499: | 2 | 50.00% |
| $1,500 to $1,999: | 0 | 0.00% |
| $2,000 to $2,499: | 0 | 0.00% |
| $2,500 to $2,999: | 0 | 0.00% |
| $3,000 or more: | 0 | 0.00% |
| No Rent: | 0 | 0.00% |
| Total: | 4 | 100% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Rent | $333 | $381 | $0 | $389 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 |
| Owner Occupied (with mortgage): | 9 | 19.57% |
| Owner Occupied (free and clear, no mortgage): | 33 | 71.74% |
| Renter Occupied: | 4 | 8.70% |
| Total Occupied Housing Units: | 46 | 100% |
| Occupied Housing Units: | 46 | 85.19% |
| Vacant Housing Units (not graphed): | 8 | 14.81% |
| Total Housing Units: | 54 | 100% |
| Single-Family Units: | 35 | 64.81% |
| Multi-Family Units: | 0 | 0.00% |
| Other Units: | 19 | 35.19% |
| Total Housing Units: | 54 | 100% |
In 2024, 32.80% of adults (25+) have a bachelor's degree or higher, which is comparable to the national rate (35.70%). High school or higher is 88.10%, which is comparable to the national rate (89.60%). The uninsured rate is 0.00%, which is comparable to the national rate (8.40%). Public coverage is 64.10%, which is far higher than the national rate (36.70%). The share of people in poverty is 30.40%, which is comparable to the national rate (8.80%), up 15.50 percentage points since 2011 and above its 2019 pre-pandemic level by 19.20 percentage points. This signals a sharp increase in hardship - a shrinking consumer base, heavy pressure on public services, and job-market contraction risks. Among residents ages 3+, the largest enrollment group is elementary (100.00%). College enrollment is 0.00%, which is comparable to the national rate (26.70%), meaning the community mirrors broader higher-education participation.
Explore More:Educational AttainmentHealth InsurancePoverty Over TimeSchool Enrollment
| Less than 9th grade: | 7 | 10.45% |
| 9th to 12th grade, no diploma: | 1 | 1.49% |
| High school graduate (includes equivalency): | 7 | 10.45% |
| Some college, no degree: | 19 | 28.36% |
| Associate's degree: | 11 | 16.42% |
| Bachelor's degree: | 15 | 22.39% |
| Graduate or professional degree: | 7 | 10.45% |
| Total: | 67 | 100% |
| High school or higher: | 59 | 88.06% |
| Bachelor's degree or higher: | 22 | 32.84% |
| Private Insurance: | 72 | 54.96% |
| Public Insurance: | 59 | 45.04% |
| No Insurance: | 0 | 0.00% |
| Total: | 131 | 100% |
| Has Health Insurance: | 131 | 100.00% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| % of People in Poverty | 3.7% | 4.9% | 3.1% | 7.1% | 5.3% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 19.2% | 30.4% |
Note: Counts of Families & People in poverty are not published at the ZIP Code level due to small sample sizes. Percentages shown are survey estimates from the American Community Survey (ACS). They may differ from official poverty statistics. The U.S. Census Bureau defines poverty status by comparing a family's or individual's total income with federal poverty thresholds that vary by family size and composition.
| Nursery School, Preschool: | 0 | 0.00% |
| Kindergarten: | 0 | 0.00% |
| Elementary school (grades 1-8): | 18 | 100.00% |
| High school (grades 9-12): | 0 | 0.00% |
| College or graduate school: | 0 | 0.00% |
| Total: | 18 | 100% |
| Early Childhood: | 0 | 0.00% |
| K-12 (Primary & Secondary School): | 18 | 100.00% |
ZIP Code 57429 supports both business and residential activity. According to the Business Census (2024), there are 3 business establishments, employing about 3 people with an annual payroll of $74,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 55Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 3Source: CBP |
| 1st Quarter Payroll: | $22,000Source: CBP |
| Annual Payroll: | $74,000Source: CBP |
| # of Employees: | 3Source: CBP |
ZIP Code 57429 is located in Spink County, South Dakota, within the Metropolitan Statistical Area (CBSA ). This area has a population of 0 people, about 0.00% of whom live in ZIP Code 57429. It covers 14.07 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | --Source: Census |
| CBSA Number: | --Source: Census |
| CBSA Type: | --Source: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 0Source: Census |
| MSA: | Source: Census |
| Land Area: | 14.07 sq miSource: Census |
| Water Area: | --Source: Census |
| Congressional District: | No DistrictsSource: USPS |
| Congressional Land Area: | sq miSource: Census |
| PMSA: | Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 4607060Source: Census |
| Place Name: | Brentford town; South DakotaSource: Census |
We could not locate which school district 57429 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.
Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on February 1, 2026.