What is the population of Spearfish city?

Spearfish city has 12,551 residents on Census ACS 2019-2023 ACS 5-year estimates, ranking #10 of 485 in South Dakota.

What is the median household income in Spearfish city?

Median household income in Spearfish city is $59,731 a year, 23.9% below the national figure of $78,538.

How much does it cost to rent or buy in Spearfish city?

Median gross rent is $941 a month and the median home value is $309,200, so rent absorbs about 18.9% of median household income.

Is Spearfish city affordable compared with the rest of the US?

Homes cost about 5.2× the local median income here versus roughly 3.9× nationally, so Spearfish city is less affordable to buy in than the typical US market, and rent takes 18.9% of median income against the 30% cost-burden line.

Aerial view of a dense city center, illustrating the US cities ZIP code directory

South Dakota · Census place 60020

Spearfish, SD population, income and ZIP codes

Quick answer

The population of the city of Spearfish, South Dakota (Spearfish, SD — Census place “Spearfish city”) is 12,551 residents, ranking #10 of 485 places in South Dakota. Median household income is $59,731, the median home is worth $309,200 and median gross rent runs $941 a month. Looking for the Spearfish South Dakota ZIP code list? 2 ZIP codes serve Spearfish, SD: 57783, 57799.

Population: 12,551Spearfish city residents
Median household income: $59,731Past 12 months, inflation adjusted
Median home value: $309,200Owner-occupied units
Median gross rent: $941Rent plus utilities, monthly
Median age: 37.2 yrsAll residents
Homeownership rate: 48.3%Owner-occupied households

Spearfish ZIP codes (South Dakota)

Census ZCTAs whose delivery area overlaps Spearfish.

The Spearfish SD ZIP code list below covers 2 ZIP codes. Open any one for its population, income, housing and rent profile.

What the numbers mean in Spearfish city

Housing cost measured against local earnings.

A household earning the Spearfish city median would spend about 18.9% of gross income on the median rent. The 30% mark is the federal threshold for cost burden, so anything above it signals a stretched rental market. The median home costs 5.2× the median household income; nationally that ratio sits near 4.5×. Poverty affects 15.2% of residents and 48.3% of households own their home.

Source: US Census Bureau, ACS 2019-2023 5-year estimates · rates as published for 2019-2023 ACS 5-year

Spearfish city, SD in context

How this area compares with national benchmarks.

Spearfish city is a mid-size town in South Dakota, with 12,551 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #10 of 485 ranked by population — larger than 98% of them. The median age here is 37.2 years against 39.1 nationally, a slightly younger profile than the country as a whole. Places under 65,000 residents only appear in the five-year release, never the one-year file, so these values pool sixty months of responses and lag the current year by design.

Households in Spearfish city earn a median of $59,731 a year, 23.9% below the national figure of $78,538 and 9% below the $65,500 median for the 79 South Dakota cities we cover. This figure covers the household, not the worker: two people on ordinary wages at one address outrank a single professional in the same table. Poverty reaches 15.2% of residents here, above the 12.4% national rate.

The typical owner-occupied home in Spearfish city is valued at $309,200, 1.9% above the national figure and 60% above the $192,800 peer median, while median gross rent runs $941 a month, 33.1% below the national figure, or roughly $11,292 across a full year. A household on the local median income would put about 18.9% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is cheap relative to what people here earn. The home-price-to-income ratio works out to 5.2×, against roughly 3.9× nationally, so buying is harder here than in the average US market. 48.3% of occupied homes are owner-occupied versus 65% nationally, so the market leans more heavily on renters. The rent line includes utilities paid by the tenant, a definition worth remembering when comparing it against a landlord's quoted rate.

Every value on this page is published directly by the Census for this area — nothing is modelled or interpolated. Small-area estimates still carry wider margins of error than state or national figures, so check the linked ACS tables before relying on them for lending, appraisal or legal work.

Compare with nearby places

Places of similar size in South Dakota.

More South Dakota coverage.

Frequently asked questions

Common questions about this area.

What is the population of Spearfish city?: Spearfish city has 12,551 residents on Census ACS 2019-2023 ACS 5-year estimates, ranking #10 of 485 in South Dakota.
What is the median household income in Spearfish city?: Median household income in Spearfish city is $59,731 a year, 23.9% below the national figure of $78,538.
How much does it cost to rent or buy in Spearfish city?: Median gross rent is $941 a month and the median home value is $309,200, so rent absorbs about 18.9% of median household income.
Is Spearfish city affordable compared with the rest of the US?: Homes cost about 5.2× the local median income here versus roughly 3.9× nationally, so Spearfish city is less affordable to buy in than the typical US market, and rent takes 18.9% of median income against the 30% cost-burden line.
How current is this Spearfish city data?: All figures come from the US Census Bureau American Community Survey 2019-2023 ACS 5-year five-year estimates. Places under 65,000 residents only appear in the five-year release, never the one-year file, so these values pool sixty months of responses and lag the current year by design.