Custer, SD · standard
ZIP Code 57730
Custer County, South Dakota - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 5,315
- 4/sq mi Low-density area
- $83,469
- Median income Above-median income area
- $378,800
- Median home value Above-median home value
- 34.0%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
Custer pairs an above-median household income with upper-quartile home values, in a rural, homeowner-dominated area.
- Top 34%
- household income, US ZIPs
- Top 23%
- home value, US ZIPs
- 4
- people per sq mi
- 80%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 57730 against every reporting US ZIP.
FHFA HPI release change
What changed in the latest House Price Index year
- FHFA House Price Index values in ZIP 57730 (Custer, SD) rose +7.9% from 2023 to 2024.
ZIP code 57730 is a mid-sized community (a standard USPS delivery area) in Custer, Custer County, South Dakota, home to 5,315 residents across 1398.7 square miles, a density of 4 people per square mile, in the Denver time zone.
ZIP 57730 lands in the middle-income range, with a median household income of $83,469 (9% above the average South Dakota ZIP), while per-capita income is $50,472. The poverty rate is 10.0%, with unemployment at 1.8%; those measures add context to the income figure. Housing is both higher-cost and owner-heavy: median home value is $378,800 (97% above the average South Dakota ZIP), while 80.4% of occupied homes are owner-occupied and median rent is $1,087.
A solid share of residents have a four-year degree: 34.0% of adults hold a bachelor's degree or higher, the median age is 57.9, and the average commute is 26 minutes. The page also surfaces 1 ZIP codes within roughly 10 miles and 3 more in Custer County, so 57730 can be compared with both its immediate and county-level context.
Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →
Top industries in ZIP 57730
Top 5 sectors by establishment count in Custer, SD
Which industries have the most business establishments in ZIP 57730.
- Accommodation and food services
Accommodation and food services
55 establishments
- Construction
Construction
33 establishments
- Retail trade
Retail trade
28 establishments
- Other services (except public administration) 19
Other services (except public administration)
19 establishments
- Health care and social assistance 18
Health care and social assistance
18 establishments
What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 57730, Custer, SD · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.
Quick Facts
5,315
Population
1398.7
Area (sq mi)
4
People / sq mi
Denver
Time Zone
standard
ZIP Type
Who lives in ZIP 57730?
57.9
Median Age
47.6%
Male
52.4%
Female
2.8%
Foreign-Born
Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How much do residents earn?
$83,469
Median Household Income
+9% vs state ZIP avg
$50,472
Per Capita Income
10.0%
Poverty Rate
1.8%
Unemployment Rate
26.1 min
Mean Commute Time
How ZIP 57730 ranks among South Dakota ZIPs
Custer, SD household income vs. every South Dakota ZIP code
Median household income among 337 reporting South Dakota ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$83,469 Top 34% higher than 66% of 337 South Dakota ZIPs
Each bar is a $20K-wide band; taller bars hold more South Dakota ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
3,346housing units
3,346
Total Housing Units
2,733
Occupied Units
613
Vacant Units
1.97
Avg Household Size
Occupancy Type
$378,800
Median Home Value
+97% vs state ZIP avg
$1,087
Median Rent
1981
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 242 business establishments in ZIP 57730, employing approximately 1,254 people with a combined annual payroll of $62,118,000.
242
Businesses
1,254
Employees
$62.1M
Annual Payroll
16
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Accommodation and food services | 55 | 22.7% |
| Construction | 33 | 13.6% |
| Retail trade | 28 | 11.6% |
| Other services (except public administration) | 19 | 7.8% |
| Health care and social assistance | 18 | 7.4% |
| Professional, scientific, and technical services | 17 | 7.0% |
| Finance and insurance | 13 | 5.4% |
| Administrative and support and waste management and remediation services | 13 | 5.4% |
| Real estate and rental and leasing | 11 | 4.5% |
| Manufacturing | 6 | 2.5% |
| Arts, entertainment, and recreation | 6 | 2.5% |
| Wholesale trade | 5 | 2.1% |
| Transportation and warehousing | 4 | 1.6% |
| Information | 4 | 1.6% |
| Agriculture, forestry, fishing and hunting | 3 | 1.2% |
| Mining, quarrying, and oil and gas extraction | 3 | 1.2% |
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
Nearby ZIP Codes
Want a side-by-side? Compare 57730 vs 57773 →
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 57773 | Pringle, SD | 133 | 9.4 mi |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 57730, both outside SD so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (5,315 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Custer County
Related Areas
Frequently Asked Questions
What county is ZIP code 57730 in?
ZIP code 57730 (Custer) is located in Custer County, South Dakota. Custer County contains multiple ZIP codes, see the full list at /counties/custer-sd.
What is the population of ZIP code 57730?
ZIP code 57730 in Custer, SD has a population of 5,315 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 57730?
The median household income in ZIP 57730 is $83,469, which is 9% above the national average of $76,288.
What is the average home value in ZIP 57730?
The median home value in ZIP 57730 is $378,800, which is 36% above the national average of $278,155.
What is the demographic makeup of ZIP 57730?
The largest racial group in ZIP 57730 is White at 88.2%. Hispanic or Latino residents make up 2.3% of the population.
How many businesses are in ZIP code 57730?
ZIP code 57730 has 242 business establishments employing approximately 1,254 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 57730?
The top industries by establishment count in ZIP 57730 are: Accommodation and food services (55), Construction (33), Retail trade (28). There are 16 industry sectors represented in total.
What is the education level in ZIP code 57730?
In ZIP code 57730, 58.7% of residents aged 25+ have a high school diploma or higher, and 34.0% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 57730?
The mean commute time for workers in ZIP code 57730 is 26.1 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 57730?
In ZIP code 57730, approximately 80.4% of occupied housing units are owner-occupied and 19.6% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 57730?
The poverty rate in ZIP code 57730 is 10.0% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.
Related
Take this with you
What to do with ZIP 57730's numbers, next.
- See how ZIP 57730 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Custer, SD ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.