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ZIP Code57750

Interior, SD

Jackson County · South Dakota · United States
Home to 286 people across 325.236 square miles.

MountainRenter-majority5 ZIPs in county

At a glance

57750 by the numbers

Every figure below comes from the 2019–2023 American Community Survey 5-Year Estimates, the Census Gazetteer, or is computed from those. Margins of error are shown where they matter.

Population
286
±141 · bottom 25% nationally
Median household income
—
US median $70,109 · —
Median home value
—
US median $207,500 · —
Median age
25.9
US median 42 years
Population density
1/mi²
bottom 10% most dense
Land area
325.236 mi²
plus 0.828 mi² water

Location

Where 57750 is

43.5929, -101.945128 · Census ZCTA internal pointOpen larger map →
Coordinates43.5929, -101.945128
Time zoneAmerica/Denver
CountyJackson County
StateSouth Dakota (SD)
Land area325.236 mi²
Coordinate sourceCensus ZCTA internal point

Local time

America/Denver

—:—:—

Current weather

Live from the National Weather Service

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Distance to major cities

Straight-line, computed from coordinates

Denver, CO309.1 mi
Chicago, IL735.1 mi
Dallas, TX797.5 mi
Phoenix, AZ888.0 mi

People

Who lives in 57750

286 residents in 108 households, averaging 2.65 people per household. The largest age group is under 18 at 33.2% of residents, and 75.0% of households are families.

Age distribution

Share of residents by age band

Under 1833.2%
18-2414.3%
25-3414.0%
35-443.8%
45-5413.6%
55-6414.3%
65+6.6%

Households

Composition and size

Total households108
Average household size2.65
Family households75.0%
Living alone25.0%
Median age25.9 years
Households with internet26.9%

Race & ethnicity

Census race categories. Hispanic or Latino origin is asked separately and overlaps these groups.

White29.4%
Native American70.6%

Income & work

What people earn in 57750

Income data is suppressed for this ZIP code.

Compared to the US

This ZIP against the national median

Median household income—
Median household income— ±—
Per capita income$12,221
Poverty rate71.0%
Unemployment rate0.0%
Labor force participation29.8%

Household income distribution

Share of households in each bracket

<$25k63.0%
$25-50k17.6%
$50-75k13.0%
$75-100k0.9%
$100-150k5.6%
$150-200k0.0%
$200k+0.0%

Educational attainment among residents 25 and older: 14.0% hold a bachelor's degree or higher, 67.3% finished high school.

Housing

Homes and rent in 57750

median rent runs $913 a month. This is a renter-majority area — 60.2% of occupied homes are rented, and the typical building went up in 1978.

Costs

Typical values

Median home value—
Median gross rent$913/mo
Median year built1978
Housing units146
Vacancy rate26.0%

Own vs. rent

Of 108 occupied units

Owner-occupied39.8%
Renter-occupied60.2%
Owner households43
Renter households65

Building types

Units by structure size

Single family74.0%
2-4 units10.3%
20+ units15.1%
Mobile / other0.7%

Getting to work

How 57750 commutes

52.6% of workers drove alone, and the average one-way trip takes 21.3 minutes. 33.3% work from home.

Mode of transport

Workers 16 and older

Drove alone52.6%
Walked14.0%
Worked from home33.3%

Travel time

Mean commute 21.3 minutes

<10 min55.3%
10-190.0%
20-290.0%
30-4431.6%
45-5913.2%
60+0.0%

Overview

Understanding ZIP code 57750

ZIP code 57750 is assigned to Interior, SD, and falls within Jackson County. Like every US postal code, it began as a mail-routing device rather than a geographic boundary — the US Postal Service groups delivery routes under a single code so carriers and sorting equipment can process mail efficiently. Today it also serves as a practical shorthand for the area itself: roughly 286 people live inside it.

At 1 residents per square mile spread over 325.236 square miles, 57750 reads as a rural area. It is a sparsely populated postal code, and density shapes almost everything else on this page — how people get to work, whether they own or rent, and what housing costs.

Living here

What life in Interior looks like

The building stock is dominated by detached single-family houses, which account for 74.0% of housing units here. The median construction year is 1978, making the housing here from the later twentieth century. The vacancy rate of 26.0% is high, which in many places reflects seasonal or second-home use rather than abandonment.

The population skews notably young, with a median age of 25.9 against 42 nationally. The average household holds 2.65 people, and 75.0% are family households.

Getting to work takes 21.3 minutes on average one way. The dominant mode is drove alone at 52.6% of workers, while 14.0% walk, 33.3% work from home. Commute patterns are one of the better proxies for how a place actually functions day to day.

Where to stay

Where to stay in Interior, SD

57750 covers a rural area, and accommodation within the postal code itself is likely to be sparse — perhaps a country inn, a lodge or a vacation rental rather than a conventional hotel. Widening the search radius is usually the practical approach, and it also opens up more availability at short notice.

Median rent in 57750 is $913 a month, which sits in the middle of the national range; accommodation pricing locally tends to be similarly mid-market. For reference, Denver, CO is about 309.1 miles away in a straight line, which is worth factoring in if you are comparing a stay here against one closer to the city centre.

Availability and pricing change constantly, so the live search below will give you a more accurate picture than any figure we could publish here. It opens results for this area on Booking.com.

Book a Hotel →

Opens Booking.com in a new tab. We are not affiliated with Booking.com and receive nothing from this link.

Practical uses

What ZIP code 57750 is used for

Beyond addressing mail, 57750 does a lot of quiet administrative work. Retailers use it to calculate shipping and sales tax at checkout. Insurers use it to set premiums, since risk profiles vary geographically. Employers and marketers use it to define service areas. Government agencies use it to route benefits and organise reporting. If you have ever been asked for a postal code by a form that clearly does not intend to send you anything, this is why.

For anyone weighing a move, 57750 offers a compact profile of Interior: 286 residents, 14.0% of adults holding a bachelor's degree or higher, and an unemployment rate of 0.0%. A handful of figures like these answer more relocation questions than most neighbourhood guides do.

One caution worth repeating: a postal code is not a neighbourhood. 57750 may cover parts of several distinct areas, and a single neighbourhood in Interior may be split across more than one code. Boundaries also shift as USPS adjusts delivery routes. Treat the figures here as describing a delivery area, which is what they actually measure.

Nearby

ZIP codes near 57750

The eight closest postal codes by centroid distance, each with its own full profile. You can also browse every South Dakota ZIP code or use the ZIP Express Lookup to search by city, county or time zone.

57577Wanblee15.3 mi away57752Kyle17.1 mi away57714Allen18.3 mi away57543Kadoka23.7 mi away57547Long Valley27.1 mi away57780Scenic29.3 mi away57551Martin30.1 mi away57775Quinn34.7 mi away

More in Jackson County

57521575435754757577

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Questions

Common questions about 57750

What city is ZIP code 57750 in?
57750 serves Interior, South Dakota, in Jackson County, United States.
What is the population of 57750?
About 286 people live in ZIP code 57750, according to the US Census Bureau's 2019–2023 American Community Survey 5-Year Estimates. The margin of error on that figure is ±141. That works out to roughly 1 people per square mile.
Is 57750 a good place to live?
That depends on what you're looking for, but here are the facts: 14.0% of adults hold a bachelor's degree or higher, the unemployment rate is 0.0%, and the median age is 25.9. The average commute is 21.3 minutes. We publish the numbers and let you weigh them.
What time zone is 57750 in?
57750 observes Mountain Time (America/Denver). This zone observes daylight saving time.
How big is ZIP code 57750?
ZIP code 57750 covers 325.236 square miles of land plus 0.828 square miles of water, per the US Census Bureau's 2023 Gazetteer files.
Is 57750 urban, suburban or rural?
By population density, 57750 reads as a rural area. It holds 1 people per square mile across 325.236 square miles of land. For reference, densities above 10,000 per square mile generally indicate an urban core, 1,000–3,000 is typically suburban, and under 200 is rural. These are rules of thumb rather than official designations — the Census Bureau classifies urban and rural areas by census block, not by ZIP code.
How much is rent in 57750?
Median gross rent in 57750 is $913 a month, according to the American Community Survey. Gross rent includes contract rent plus the estimated cost of utilities and fuels, so it is closer to what a tenant actually pays than a headline rent figure. Of 108 occupied homes here, 65 are rented.
What is the commute like from 57750?
The average one-way commute from 57750 takes about 21.3 minutes. The most common way to travel is drove alone, used by 52.6% of workers aged 16 and over. Commute figures cover people who were employed and working outside the home during the survey period.
How many people work in 57750?
About 57 residents of 57750 are employed. Labor force participation stands at 29.8% and the unemployment rate is 0.0%. Note this counts residents by where they live, not by where they work — a ZIP with many offices can have far more jobs than employed residents.
Where should I stay when visiting 57750?
Accommodation in and around Interior, SD ranges with the character of the area. See the 'Where to stay' section on this page for local context, and use the live search there for current availability and pricing.
Does 57750 cover more than one city or county?
This page lists Interior as the primary place and Jackson County as the county. ZIP codes follow mail delivery routes rather than municipal or county lines, so a single code can straddle boundaries, and USPS also recognises alternate acceptable city names for many codes. If you need the definitive answer for a specific street address, the USPS ZIP Code Lookup is the authority.
Can ZIP code 57750 change?
Yes. USPS adjusts ZIP codes as delivery volumes shift — codes are occasionally split, merged, retired or newly created, and boundaries move more often than most people assume. The Census Bureau's ZCTA definitions, which underpin the demographic figures on this page, are redrawn only once a decade, so the two can drift apart between censuses.

Methodology

Where this data comes from

  • Postal geography — GeoNames open postal code database (CC BY 4.0), cross-checked against the US Census Gazetteer.
  • Demographics, income, housing, commute — US Census Bureau, American Community Survey 2019–2023 5-Year Estimates, ZIP Code Tabulation Area 57750. Tables B01001, B01002, B01003, B02001, B03003, B08301, B08303, B11001, B15003, B17001, B19001, B19013, B19301, B23025, B25002, B25003, B25024, B25035, B25064, B25077, B28002.
  • Land and water area — US Census Bureau 2023 Gazetteer Files.
  • Weather — NOAA National Weather Service, fetched live in your browser.
  • Map — OpenStreetMap contributors (ODbL).
On accuracy. ACS figures are survey estimates, not counts. The margin of error shown alongside the population figure means the true value has a 90% chance of falling in that range. For small ZIP codes the error can be large relative to the estimate — treat the direction as more reliable than the exact number. This page reports data for ZCTA 57750, the Census approximation of the USPS delivery area.

Postal geography — place names, counties and coordinates — comes from the open GeoNames database, published under a Creative Commons licence.