| City: | Union Center, South Dakota |
| City Alias: | Red Owl, Stoneville |
| Names to Avoid: | Chalk Butte |
| County: | Meade County |
| Timezone: | Mountain (GMT -07:00) |
| Local Time: | 6:51:56 AM |
| Population: | 336 [See All] |
| Area Code: | 605 |
| Classification: | Standard [Normal Street Delivery] |
| Coordinates: | 44.6819, -102.6573 |
| Land Area: | 627.24 sq mi |
| Quick Link: |
ZIP Code 57787 has 336 residents and 136 households (average 2.47 persons per household). The median age is 42.0 years, older than the state (37.7) and older 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 (97.3%, much higher than the state average of 80.7% and well above the national average of 61.6%) and Hispanic or Latino (1.2%); Hispanic or Latino residents make up 1.2%, which is much lower than the national average (18.7%).
Explore More:Population Over TimeBy Age & GenderBy RaceBy GenderNativity & Citizenship
| 2020 Population: | 336Source: Census DHC |
| 2024 ACS Population Estimate: | 487Source: Census ACS |
| 2026 ZC Population Estimate: | 291Source: ZIP-Codes.com |
| Population Density: | 0.5 people per sq mile |
| Average Income: | $53,750Source: Census ACS |
| Households: | 136Source: Census DHC |
| Average House Value: | $61,800Source: Census ACS |
| Persons Per Household: | 2.47Source: Census DHC |
| Average Family Size: | 2.50Source: Census ACS |
| Group | 2010 | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Census ACS Population Estimate | -- | 358 | 374 | 364 | 421 | 412 | 400 | 381 | 429 | 351 | 305 | 659 | 677 | 599 | 487 |
| Decennial Census | 365 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 336 | -- | -- | -- | -- |
Median Age: 42
Male Median Age: 45.3
Female Median Age: 39.2
| 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 | 3 | 16 | 10 | 15 | 2 | 4 | 15 | 15 | 10 | 13 | 6 | 10 | 18 | 27 | 7 | 9 | 1 | 3 |
| Female | 15 | 18 | 18 | 5 | 0 | 3 | 11 | 11 | 8 | 9 | 4 | 10 | 9 | 19 | 3 | 2 | 4 | 3 |
| Total | 18 | 34 | 28 | 20 | 2 | 7 | 26 | 26 | 18 | 22 | 10 | 20 | 27 | 46 | 10 | 11 | 5 | 6 |
| White: | 327 | 97.90% |
| Black: | 0 | 0% |
| Hispanic:* | 4 | 1.20% |
| Asian: | 0 | 0% |
| American Indian: | 3 | 0.90% |
| Hawaiian: | 0 | 0% |
| Other: | 0 | 0% |
| Total: | 334 | 100% |
| Gender | Count | % | Median Age |
|---|---|---|---|
| Males: | 184 | 54.76% | 45.3 years |
| Females: | 152 | 45.24% | 39.2 years |
| Total: | 336 | 100% | 42.0 years |
| Native, born in the United States: | 487 | 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: | 487 | 100% |
| Total Native Population: | 487 | 100.00% |
| Total Foreign-born Population: | 0 | 0.00% |
In 2024, the Median household income is $53,750, which is much lower than the national median ($80,734), is up $7,500 (16.2%) since 2011 and above its 2019 pre-pandemic level by $119. Family households earn a median of $59,667 versus $16,150 for nonfamily households (a difference of $43,517). By gender, male median income is $0 and female is $0, which is considerably lower than the national female median ($55,274), with a current gap of $0 that has narrowed from 2011 to 2024. The labor-force participation rate is 75.3%, which is considerably higher than 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 (55.8%).
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 | $46,250 | $29,551 | $29,858 | $37,303 | $40,644 | $41,042 | $41,211 | $44,292 | $53,631 | $38,533 | $53,750 | $56,422 | $57,831 | $53,750 |
| Median Family Income | $49,444 | $29,167 | $29,716 | $40,294 | $41,023 | $41,319 | $41,641 | $51,429 | $54,940 | $0 | $61,875 | $57,069 | $58,971 | $59,667 |
| Median NonFamily Income | $33,750 | $36,667 | $36,042 | $35,781 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $16,150 |
| Median Male Income | $41,528 | $29,583 | $29,167 | $25,833 | $0 | $0 | $2,499 | $25,250 | $35,398 | $26,484 | $27,054 | $0 | $0 | $0 |
| Median Female Income | $30,234 | $30,066 | $32,619 | $34,236 | $0 | $40,380 | $40,491 | $42,625 | $30,446 | $0 | $25,302 | $24,635 | $0 | $0 |
| Employed: | 301 | 75.25% |
| Unemployed: | 0 | 0.00% |
| Not In Labor Force: | 99 | 24.75% |
| Total: | 400 | 100% |
| Management, business, science, and arts: | 168 | 55.81% |
| Service: | 5 | 1.66% |
| Sales and Office: | 44 | 14.62% |
| Natural resources, construction, and maintenance: | 50 | 16.61% |
| Production, transportation, and material moving: | 34 | 11.30% |
| Total Civilian Employed Population: | 301 | 100% |
In 2024, the median home value is $61,800, which is well under the national median ($332,700), is down $60,800 (49.59%) since 2011 and below its 2019 pre-pandemic level by $58,900. The median gross rent is $952, which is far less than the national median ($1,413), and above its 2019 pre-pandemic level by $952. Of occupied housing, owners make up 44.50% (0.00% with a mortgage, 100.00% free-and-clear) and renters 55.50% - making this ZIP Code higher than national rental averages. The vacancy rate is 0.00%, which is considerably lower than the national rate (10.12%).
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 | $122,600 | $120,800 | $123,200 | $98,100 | $98,200 | $97,100 | $0 | $110,600 | $120,700 | $221,700 | $154,000 | $0 | $0 | $61,800 |
| Less than $500: | 0 | 0.00% |
| $500 to $999: | 52 | 46.85% |
| $1,000 to $1,499: | 9 | 8.11% |
| $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: | 50 | 45.05% |
| Total: | 111 | 100% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Rent | $0 | $914 | $0 | $0 | $531 | $610 | $0 | $0 | $0 | $0 | $774 | $852 | $854 | $952 |
| Owner Occupied (with mortgage): | 0 | 0.00% |
| Owner Occupied (free and clear, no mortgage): | 89 | 44.50% |
| Renter Occupied: | 111 | 55.50% |
| Total Occupied Housing Units: | 200 | 100% |
| Occupied Housing Units: | 200 | 100.00% |
| Vacant Housing Units (not graphed): | 0 | 0.00% |
| Total Housing Units: | 200 | 100% |
| Single-Family Units: | 116 | 58.00% |
| Multi-Family Units: | 0 | 0.00% |
| Other Units: | 84 | 42.00% |
| Total Housing Units: | 200 | 100% |
In 2024, 35.90% of adults (25+) have a bachelor's degree or higher, which is comparable to the national rate (35.70%). High school or higher is 94.70%, which is comparable to the national rate (89.60%). The uninsured rate is 12.70%, which is comparable to the national rate (8.40%). Private coverage is 85.20%, which is well above the national rate (67.10%). Public coverage is 4.50%, which is far lower than the national rate (36.70%). The share of people in poverty is 0.00%, which is comparable to the national rate (8.80%), up 6.20 percentage points since 2011 and above its 2019 pre-pandemic level by 10.70 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 (66.41%). College enrollment is 0.00%, which is far lower than the national rate (26.70%), indicating the community may be more oriented toward vocational/trade or direct-to-workforce opportunities.
Explore More:Educational AttainmentHealth InsurancePoverty Over TimeSchool Enrollment
| Less than 9th grade: | 0 | 0.00% |
| 9th to 12th grade, no diploma: | 16 | 5.32% |
| High school graduate (includes equivalency): | 95 | 31.56% |
| Some college, no degree: | 21 | 6.98% |
| Associate's degree: | 61 | 20.27% |
| Bachelor's degree: | 108 | 35.88% |
| Graduate or professional degree: | 0 | 0.00% |
| Total: | 301 | 100% |
| High school or higher: | 285 | 94.68% |
| Bachelor's degree or higher: | 108 | 35.88% |
| Private Insurance: | 415 | 83.17% |
| Public Insurance: | 22 | 4.41% |
| No Insurance: | 62 | 12.42% |
| Total: | 499 | 100% |
| Has Health Insurance: | 437 | 87.58% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| % of People in Poverty | 14.2% | 9.0% | 7.4% | 7.2% | 0.0% | 0.0% | 0.0% | 0.0% | 9.7% | 30.3% | 16.0% | 18.6% | 20.4% | 0.0% |
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): | 87 | 66.41% |
| High school (grades 9-12): | 44 | 33.59% |
| College or graduate school: | 0 | 0.00% |
| Total: | 131 | 100% |
| Early Childhood: | 0 | 0.00% |
| K-12 (Primary & Secondary School): | 131 | 100.00% |
ZIP Code 57787 supports both business and residential activity. According to the Business Census (2024), there are 4 business establishments, employing about 28 people with an annual payroll of $1,709,000. USPS data shows 118 residential mailboxes and 2 business mailboxes, reflecting local delivery coverage.
| # Residential Mailboxes: | 118Source: USPS |
| # Business Mailboxes: | 2Source: USPS |
| Total Delivery Receptacles: | 1,257Source: USPS |
| Single Family Delivery Units: | 118Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 4Source: CBP |
| 1st Quarter Payroll: | $349,000Source: CBP |
| Annual Payroll: | $1,709,000Source: CBP |
| # of Employees: | 28Source: CBP |
ZIP Code 57787 is located in Meade County, South Dakota, within the Rapid City, SD Metropolitan Statistical Area (CBSA 39660). This Metro area has a population of 126,382 people, about 0.27% of whom live in ZIP Code 57787. It covers 627.24 sq mi of land and a water area of 0.978 sq mi.
| CBSA Name: | Rapid City, SDSource: Census |
| CBSA Number: | 39660Source: Census |
| CBSA Type: | MetroSource: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 126,382Source: Census |
| MSA: | Source: Census |
| Land Area: | 627.24 sq miSource: Census |
| Water Area: | 0.978 sq miSource: 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: | --Source: Census |
| Place Name: | --Source: Census |
ZIP Code 57787 is in the Meade School District 46-1, which serves grades Pre-Kindergarten thru 12th. There are 2 public school(s) in this ZIP Code, and we have located 3 private school(s). 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.