Coreline LLC

Excavation contractor in Spencer, SD 57374

About this company

Coreline LLC is listed as an excavation contractor based in Spencer, South Dakota, in McCook County. It is one of 1 excavation and demolition companies in ZIP 57374.

Fleet size

Drivers8

Last federal filing: May 2026. Source: FMCSA.

Moderate marketArea profitability for excavation and demolition in ZIP 57374

Housing demand53

Sales pace, new listings and new construction. Source: Zillow

Customer spending power61

Household income and home values

Scored against every US ZIP. An index of local conditions, not this company's results.

County context

One of 1 excavation and demolition companies in McCook County, SD.

4 general contractors in McCook County, SD.

All 7 construction companies in McCook County, SD.

ZIP 57374 at a glance

Population: 272 (1 per sq mi)
Median age: 40
Households: Median income $79,167 · 42% earn six figures
Housing: 92% owner-occupied
Workforce: 53% labor-force participation · 0.0% unemployment

ZIP figures are US Census estimates for the ZIP area, not the company.

Housing market around ZIP 57374

Figures describe the local area, not this company.

Typical home value$259,000+8.3% past year · +95% in 10 years

12-month value outlook+1.6%

Days to sale agreement37Sioux Falls metro

New homes permitted, 202519McCook County

Listings with a price cut27.2%Sioux Falls metro

Sale price vs list100.2%Sioux Falls metro

New construction sales44Sioux Falls metro, Aug · −23% from last year

Source: Zillow (home values, rent, outlook and metro sales), data through Sep 2026. Permits: U.S. Census Bureau.

Typical home value, last 10 years

Source: Zillow Home Value Index, Sep 2026.

Local building angle: McCook County permitted 19 new homes in 2025. 25% of the homes in this ZIP were built since 2000.

Local figures are estimates from public records and Zillow housing data, updated regularly.