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Elmore County, ID: population growth, jobs and income

Elmore County lost 110 residents between 2024 and 2025 (−0.4%).

Elmore County had an estimated 29,465 residents in 2025, up 2.8% (795 more people) since 2020. That is slower than Idaho as a whole (+9.8%), and the 42nd fastest growth of 43 counties in Idaho.

Data as of 2025 · updated

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In the Elmore County report

One-time $99 PDF: everything on this page for Elmore County, ranked against Idaho and the U.S., plus these figures that are not on the free page:

  • Median gross rent$1,243/mo2020–24
  • Vacant homes, incl. seasonal and second homes9.8%2020–24
  • New homes permitted, last 12 months2282025-10/2026-09
  • Rent growth, 5 yearsIn the report
  • Permits in 5+ unit buildingsIn the report
  • IRS income moving in (net AGI)In the report
  • Neighbouring-county comparison tableIn the report

What's inside: 5 pages

  1. 1 Summary, headline numbers and ranks (free preview)
  2. 2 Ranks and the neighbouring-county table
  3. 3 Migration, with IRS mover and income flows
  4. 4 Rent, vacant homes, permits and employers
  5. 5 Every source and the methods
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Headline numbers

What the numbers say

Net domestic migration was negative in 2025: 334 more people moved out to other U.S. counties than moved in.

Private employers had 4,848 paid employees in mid-March 2023, +17.4% since 2018 (County Business Patterns).

Unemployment averaged 4.3% in 2025, 0.7 points higher than in 2019 (before the pandemic).

Builders were authorized to start 164 new homes in 2025, or 5.6 per 1,000 residents.

Median household income was $65,359 in the 2020–24 American Community Survey, +43.2% since 2016–20.

Across the 3,107 U.S. counties with a comparable estimate, its population growth ranks 1,053rd.

Part of the Mountain Home, ID micro area.

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Elmore County population by year

Resident population, July 1 estimate (Census Bureau)
YearPopulationChange
202529,465−110
202429,575−40
202329,615+190
202229,425+440
202128,985+315
202028,670–

Census Bureau population estimates, July 1 of each year.

What drove the change in Elmore County

Elmore County grew by 795 people since 2020 even though 633 more residents moved to other U.S. counties than came from them: births outnumbered deaths by 906, and net international migration added 530.

Components of population change, people (Census Bureau)
Component20252020–25Share
Natural changebirths minus deaths+181+906
International migrationfrom and to other countries+48+530
Domestic migrationfrom and to other U.S. counties−334−633
Census adjustmentbalancing residual−5−8
Total change−110+795

Census Bureau population estimates, components of change, each year July 1 to June 30. The components add up to the change in the estimate; the Census adjustment is the small balancing figure the Bureau publishes.

How it ranks

MeasureIn IdahoAmong U.S. counties
Population growth42nd of 431,053rd of 3,107
Net domestic migration per 1,000 residents38th of 432,911th of 3,108
Private-sector job growth17th of 43288th of 3,092
Median household income29th of 431,589th of 3,107
Lowest unemployment rate30th of 431,890th of 3,108
New homes permitted per 1,000 residents23rd of 43517th of 3,005

1st = highest (lowest for unemployment). Counties are ranked only against others with a figure for the same period.

Get the county report — $99

The County Growth and Demographics Report for Elmore County, ID as a PDF, from federal data: population and migration, housing and rents, permits, private employers and jobs, unemployment, ranks in the state and the country, and neighbouring counties, with a source next to every number. Pay once, no subscription.

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Neighbouring counties

Elmore County grew more slowly than all 8 of its neighbouring counties (+2.8%, 2020–25).

5 of its 8 neighbouring counties had a higher median household income than Elmore County's $65,359 (2020–24).

Elmore County, ID and its 8 neighbouring counties: public federal figures
CountyPopulation2025Population change2020–25Net domestic migration per 1,000 residents2025Homes permitted per 1,000 residents2025Median household income2020–24
Elmore County, ID This county29,465+2.8%−11.35.6$65,359
Boise County, ID8,545+11.5%6.312.6$78,774
Ada County, ID546,141+9.6%15.69.6$91,502
Camas County, ID1,316+21.7%11.410.6$57,955
Gooding County, ID16,446+5.1%−4.32.2$63,559
Owyhee County, ID12,661+5.6%−11.82.8$64,406
Twin Falls County, ID97,539+7.9%7.15.4$67,409
Custer County, ID4,636+8.6%15.56.9$67,574
Blaine County, ID25,517+4.8%−12.34.4$92,566

Census Bureau population estimates and building permits, American Community Survey 5-year income. Rates per 1,000 residents. – means no figure, or a base too small for a change or rate (it would swing on a few people). A figure from another period shows its year and is left out of the comparison.

All 44 Idaho counties · Every state

Questions

Is Elmore County growing?

Yes. Its population grew 2.8% between 2020 and 2025, about 795 more people (Census Bureau population estimates). Idaho as a whole changed +9.8% over the same years. That ranks 42nd of 43 counties in Idaho for population growth.

How many people moved to Elmore County?

On net, none in 2025: about 334 more people moved out to other U.S. counties than moved in (Census Bureau net domestic migration estimate).

What is the unemployment rate in Elmore County?

It averaged 4.3% in 2025 (BLS Local Area Unemployment Statistics, annual average).

What is the population of Elmore County?

About 29,465 people, according to the U.S. Census Bureau's population estimate for July 1, 2025.

How many jobs are in Elmore County?

Private employers there had 4,848 paid employees in mid-March 2023, +17.4% since 2018 (Census Bureau County Business Patterns; government jobs and the self-employed are not counted).

What Beacon CRE covers in Idaho

Map, parcel and listing layers cover North and South Carolina only for now. This page and the other Idaho county pages carry the public federal growth figures.

Elmore County data alerts

Email me when Elmore County gets new Census numbers: population, building permits, jobs and income. About 4 emails a year, one click to stop.

We use your address only to email you when new data for Elmore County is out: what changed, with a link to that county's report. No newsletter, no other sales emails. Delete it any time with the link in every email. We'll email you a link to confirm first; nothing starts until you click it. Privacy notice.

Sources and method

Each number shows its own period. Changes compare the latest period with five years earlier (or the earliest period available). Beacon CRE last refreshed these figures on 2026-11-05. Figures come from public federal statistics and are informational only, not investment advice. Check the source before relying on a number. Methodology: how we compute every number. More on every layer: data sources and licences.

Jobs outside North and South Carolina use County Business Patterns (paid private-sector employees in mid-March); wages and government jobs are not included.