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HomeIdahoCuster CountyLost River city

Lost River city, Idaho: commercial real estate data.

Lost River city is a Census city of 55 people across 8.32 square miles of land, in Custer County. 100.0 percent of occupied homes are owned.

45 sourced place values · tier FULL · 6 sections

This is a small place, and the figures below carry wide margins.

The American Community Survey reaches Lost River through a sample, not a count, and in a place this size that sample is thin. The population estimate here is 55 with a margin of error of plus or minus 38, which is 69.1 percent of the estimate itself. Every figure whose margin reaches 20 percent is printed with that margin beside it, so you can see the width of each one rather than having to assume it.

Nothing has been removed or adjusted. These are the published federal estimates, shown with the uncertainty the Census publishes alongside them.

Lost River

What Lost River is

  • Census place typecity
  • Land area8.32 sq mi
  • Water area0.01 sq mi
  • Population per square mile of land7 plus or minus 5
  • County holding the largest share of its areaCuster County, 100.0 percent

US Census Bureau, cartographic boundary file, places, 2024 vintage. US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.

Lost River

How many people live in Lost River

  • Population55 plus or minus 38
  • Median age76.9
  • Population under 180
  • Share under 180.0 percent
  • Population 65 and over49 plus or minus 42
  • Share 65 and over89.1 percent plus or minus 46.1
  • Households11 plus or minus 17
  • Family households11 plus or minus 17
  • Share of households that are families100.0 percent

US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.

Lost River

Income and work in Lost River

  • Per capita income$31,102 plus or minus $19,067
  • Civilian labor force23 plus or minus 36
  • Employed23 plus or minus 36
  • Unemployed0
  • Unemployment rate0.0 percent
  • Adults 25 and over52 plus or minus 38
  • Adults 25 and over with a high school diploma or higher94.2 percent plus or minus 61.4
  • Adults 25 and over with a bachelor degree or higher30.8 percent plus or minus 40.4
  • Adults 25 and over with a graduate degree30.8 percent plus or minus 40.4

US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.

Lost River

Housing in Lost River

  • Housing units40 plus or minus 49
  • Occupied units11 plus or minus 17
  • Vacant units29 plus or minus 46
  • Vacancy rate72.5 percent plus or minus 73.1
  • Owner occupied11 plus or minus 17
  • Renter occupied0
  • Ownership rate100.0 percent
  • Single family units40 plus or minus 50
  • Share single family100.0 percent plus or minus 30.0
  • Units in buildings of two or more0
  • Share in buildings of two or more0.0 percent
  • Mobile homes0

US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.

Lost River

How Lost River gets to work

  • Workers 16 and over who commute12 plus or minus 20
  • Commuting under 15 minutes12 plus or minus 23
  • Share commuting under 15 minutes100.0 percent plus or minus 100.0
  • Commuting 30 minutes or more0
  • Share commuting 30 minutes or more0.0 percent
  • Drove alone0.0 percent
  • Carpooled0.0 percent
  • Public transport0.0 percent
  • Walked52.2 percent plus or minus 29.9
  • Worked from home47.8 percent plus or minus 105.2

US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.

Custer County, not Lost River

Custer County context, not Lost River figures

These are Custer County figures. There is no place level equivalent published for any of them, so they are shown as the county backdrop and never as Lost River measurements.

  • Establishments in Custer County192
  • Employment at those establishments, Custer County862
  • Covered employment, Custer County1,539
  • Average annual pay, Custer County$45,656
  • Average weekly wage, Custer County$878
  • Housing units permitted, Custer County49
  • Of those, single family, Custer County49
  • County product, 2024, Custer County$257,340,000
  • County product change over the prior year, Custer County3.6 percent
  • Average income of an arriving household, Custer County$64,298

Every figure in this section is published for Custer County as a whole and is not a measurement of Lost River. It is here because a county backdrop is what a credit committee reads a place against, and it is labelled so that it can never be quoted as the place's own.

US Census Bureau, County Business Patterns, 2023. US Bureau of Labor Statistics, Quarterly Census of Employment and Wages, 2024 annual averages. US Census Bureau, Building Permits Survey, 2024 annual. US Bureau of Economic Analysis, Regional, table CAGDP2, CAGDP2, through 2024. US Internal Revenue Service, Statistics of Income county migration flows, 2021 to 2022 filing years.

Coverage

What this page does not hold.

Every item below could be filled with a plausible figure. None of them is. On a page a lender may read, a number that cannot be traced is worse than an absence, so the absences are named.

  • No SBA approvals are recorded to a borrower address in this place in either FOIA release.
  • This place is not listed as a community in the FEMA Community Status Book, so no NFIP participation or CRS class is shown.
  • The American Community Survey does not publish a median household income for this place, which happens where the sample is too small to support one.
  • No median owner-occupied home value is published for this place.
  • No median gross rent is published for this place.
  • Parcel level detail, zoning and flood zone at an address are resolved in the platform, not on this page.

SBA figures count approvals to borrowers whose address is in the place. They are not approvals for projects inside the place boundary: the tape records a borrower city and a project county, and those can differ.

Common questions

Lost River questions, answered from the record.

How many people live in Lost River, Idaho?

55, in 11 households. Lost River city covers 8.32 square miles of land, which is 7 people per square mile. Source: US Census Bureau, American Community Survey 5-Year Estimates, place level, 2020-2024 5-year.

What county is Lost River in?

Custer County, which holds 100.0 percent of the place by area. Source: US Census Bureau, cartographic boundary file, places, 2024 vintage.

Are the county figures on this page Lost River figures?

No, and they are labelled so. County Business Patterns, QCEW, the Building Permits Survey, BEA product and IRS migration are published for Custer County as a whole and there is no place level equivalent. They appear in one clearly marked section as context and are never presented as measurements of Lost River.

Is zoning published for Lost River?

Not yet. The zoning layer is in build. Nothing on this page presents parcel level zoning.