Digital Radiation

U.S. Census Bureau · 2025 Population Estimates Program (PEP)

Idaho County Population — 2025 PEP

July 1, 2025 resident population estimates for 44 counties. State total (sum of these county estimates): 2,029,733 persons.

Separate 2025 TIGER/Line county boundaries validate county identity; these are not ACS 2024 survey estimates.

Official Vintage 2025 county identities and unsimplified TIGER coordinates; separate-period ACS housing is joined only by exact full GEOID. Original 2020 counts require separately evidenced compatible geography; incompatible observations remain null with reasons. The revised April estimates base is not an original census count; no boundary allocation is invented.

Source and downloads

2025 Census PEP county estimates, 2020–2025 series; counts are persons, migration counts are persons, published rates are per 1,000, and unavailable values remain null (not zero). 2020 rates are unavailable for the partial-year interval. County totals and characteristics are verified against the pinned raw Census CSV receipts and independent 2025 county geometry.

Official Census PEP county source · Download JSON · Download CSV · Download source metadata

Official state totals and county summaries

Official NST July 1, 2025 state total: 2,029,733 persons (SUMLEV 040, PEP Vintage 2025). County sum: 2,029,733 persons; comparison status: equal.

Official NST July 2020: 1,849,328 persons; July 2020–July 2025 change: +180,405 persons; growth: 9.755165 percent (denominator: official July 2020 population).

County July 2024–July 2025: Growing: 36 · Shrinking: 8 · Unchanged: 0 · Missing: 0. Median county growth: 0.491182 percent.

Largest county: Ada County (GEOID 16001): 546141 persons.

Fastest county growth: Canyon County (GEOID 16027): 2.871255 percent.

Greatest numeric increase: Ada County (GEOID 16001): 10916 persons.

no minimum population; missing excluded per measure; median of county percentages, not population weighted; equal values use ascending full GEOID.

Official state demographics

Resident population · SUMLEV 040 · July 1, 2025 · Census PEP Vintage 2025. Denominator for every share: 2,029,733 resident persons. Six exclusive race groups; Hispanic origin overlaps race and must not be added to it. Release: June 2026; exact day unproved; PEP estimates have no ACS sampling MOE.

Scroll horizontally to see Count and Share. Keyboard: focus this table region and use Left and Right arrow keys.

Official state age, sex, race and overlapping Hispanic origin
MeasureCountShare
Female1,013,022 persons49.909126 percent
Male1,016,711 persons50.090874 percent
Ages 18–24203,927 persons10.046986 percent
Ages 25–44523,699 persons25.801374 percent
Ages 45–64450,848 persons22.212183 percent
Ages 65 and older379,157 persons18.680142 percent
Under 18472,102 persons23.259315 percent
American Indian or Alaska Native alone40,796 persons2.009920 percent
Asian alone38,989 persons1.920893 percent
Black or African American alone23,397 persons1.152713 percent
Native Hawaiian or other Pacific Islander alone5,136 persons0.253038 percent
Two or more races93,804 persons4.621495 percent
White alone1,827,611 persons90.041941 percent
Hispanic (any race)299,881 persons14.774406 percent
Not Hispanic1,729,852 persons85.225594 percent

Official state median age: 37.9 years. Published state SYASEX median age; not a county aggregation, not ACS.

Download all state demographic observations (CSV)

Revised April 1, 2020 estimates base (official NST): 1,839,123 persons; county base sum: 1,839,123 persons; comparison: equal. This is not the original decennial census count.

Original April 1, 2020 Census count: 44 compatible counties; 0 unavailable. Published Census county centers-of-population POPULATION, original 2020 Gazetteer and official 2020–2025 geographic-change evidence; no boundary allocation. Original count, revised April estimates base and July 2020 estimate are separate observations. Documentation: November 2021; exact file release day unproved; retrieval is not release. Official original count source. Original 2020 Gazetteer identity plus Census geographic-change notes 2014–2025; no county-level change recorded from 2020 onward, exact full modern name, and original count required. Any recorded county-level change or referenced counterparty is conservatively unavailable, including unresolved internal redistricting. Same GEOID alone is insufficient. Not a claim of identical cartographic coordinates; no invented allocations.

Source release date unavailable: retained pins do not attest an official release date; retrieval is not release. Reference dates and Vintage 2025 are explicit; no current-vintage refresh is implied.

County population and demographic explorer

Choose a measure, observation year and county without downloading boundaries. Rankings, search, trends and CSV work without a map. Load map explicitly to download the full, unsimplified 2025 TIGER boundaries; this defers rather than removes their payload. The table remains available without JavaScript.

PEP population · persons · July 1, 2025. Denominator: none. Calculation/source: CO POPESTIMATEy. Vintage 2025; null with metric_status reason; measured zero remains zero; no imputation.

Loading county controls; static rankings available below…

Map not loaded. County controls and rankings do not require boundaries.

After loading, Tab to a county and press Enter or Space; colors and the legend indicate signed direction and magnitude. Outlines show selection. The county picker works before and after map loading.

Selected county demographic breakdown

July 1, 2025 · Ada County (GEOID 16001). Same-period county population is the share denominator. Hispanic origin overlaps race; do not add origin to race counts. Other overlapping classifications are not additive. Official county median age is from PEP AGESEX MEDIAN_AGE_TOT, not ACS.

County demographics: counts, shares and official median age
Classification / sourceCount or statisticShare / status
Sex · PEP male272,379 persons49.873384 percent
Sex · PEP female273,762 persons50.126616 percent
Age bands · PEP under18114,423 persons20.951183 percent
Age bands · PEP age18 2449,897 persons9.136285 percent
Age bands · PEP age25 44153,765 persons28.154817 percent
Age bands · PEP age45 64129,292 persons23.673740 percent
Age bands · PEP age65plus98,764 persons18.083975 percent
Race alone (partition) · PEP white alone481,372 persons88.140608 percent
Race alone (partition) · PEP black alone10,302 persons1.886326 percent
Race alone (partition) · PEP aian alone5,867 persons1.074265 percent
Race alone (partition) · PEP asian alone19,705 persons3.608043 percent
Race alone (partition) · PEP nhpi alone1,413 persons0.258724 percent
Race alone (partition) · PEP two or more27,482 persons5.032034 percent
Hispanic origin (overlaps race) · PEP hispanic any race59,426 persons10.881073 percent
Hispanic origin (overlaps race) · PEP not hispanic486,715 persons89.118927 percent
Other overlapping classifications (not additive) · PEP white alone or combination507,846 persons92.988075 percent
Other overlapping classifications (not additive) · PEP not hispanic white alone432,489 persons79.189989 percent
Official county median age · AGESEX MEDIAN_AGE_TOT39.1 yearsNot a share; not ACS or an average of county medians

Use Ctrl/Command or Shift to select multiple counties. The following trend uses exact resident persons, not percentages; county size affects the scale. Missing observations break lines; the revised April estimates base is a separate dashed partial interval.

2025 county population rankings

All 44 county estimates are present without JavaScript, ranked by 2025 population (largest first). Signed changes compare July 1, 2024 to July 1, 2025. Unavailable is not zero; equal values break ties by GEOID (ascending).

Showing all 44 counties; ranked by 2025 population, descending.

Idaho County Population — 2025 PEP — July 1, 2025; rank reflects the selected ordering
RankCountyGEOIDPopulation (persons)Signed change (persons)Signed change (percent)
1Ada County16001546,141+10916 persons+2.039516%
2Canyon County16027275,123+7679 persons+2.871255%
3Kootenai County16055191,864+3466 persons+1.839722%
4Bonneville County16019135,771+1978 persons+1.478403%
5Twin Falls County1608397,539+1072 persons+1.111261%
6Bannock County1600591,591+622 persons+0.683749%
7Madison County1606555,172+224 persons+0.407658%
8Bonner County1601754,420+770 persons+1.435228%
9Bingham County1601151,153+187 persons+0.366911%
10Nez Perce County1606942,905+11 persons+0.025645%
11Latah County1605741,842+104 persons+0.249173%
12Jefferson County1605135,297+441 persons+1.265205%
13Elmore County1603929,465-110 persons-0.371936%
14Payette County1607527,824+145 persons+0.523863%
15Cassia County1603126,397+187 persons+0.713468%
16Jerome County1605326,362+74 persons+0.281497%
17Blaine County1601325,517-184 persons-0.715925%
18Minidoka County1606722,911+184 persons+0.809610%
19Gem County1604521,773+323 persons+1.505828%
20Idaho County1604917,874+1 persons+0.005595%
21Gooding County1604716,446+47 persons+0.286603%
22Franklin County1604115,889+227 persons+1.449368%
23Fremont County1604314,208-138 persons-0.961941%
24Shoshone County1607914,130+104 persons+0.741480%
25Boundary County1602113,997+141 persons+1.017610%
26Teton County1608113,254+149 persons+1.136971%
27Valley County1608512,831+14 persons+0.109230%
28Owyhee County1607312,661-103 persons-0.806957%
29Washington County1608711,583+91 persons+0.791855%
30Benewah County1600910,508+22 persons+0.209804%
31Clearwater County160359,118-31 persons-0.338835%
32Boise County160158,545+39 persons+0.458500%
33Lemhi County160598,474+66 persons+0.784967%
34Power County160778,246-87 persons-1.044042%
35Caribou County160297,252+30 persons+0.415397%
36Bear Lake County160076,727+24 persons+0.358049%
37Lincoln County160635,603-28 persons-0.497247%
38Oneida County160715,085+69 persons+1.375598%
39Adams County160035,013+3 persons+0.059880%
40Custer County160374,636+54 persons+1.178525%
41Lewis County160613,704-9 persons-0.242392%
42Butte County160232,783+57 persons+2.090976%
43Camas County160251,316+29 persons+2.253302%
44Clark County16033783+1 persons+0.127877%

County population trend · 2020–2025

Resident population (persons), not ACS housing. April 1, 2020 estimates base is distinct from the July 1, 2020 estimate. The April–July 2020 change is partial-year; the July 2020–July 2021 interval is the first July-to-July comparison. No 2020 annual rate is shown. Missing observations are unavailable, never zero.

Showing Ada County (GEOID 16001). Select a county on the map or in the rankings table to update this trend.

Horizontal axis: year (2020–2025); vertical axis: resident population (persons). The 2020 base is a separate April 1 observation; July 1 estimates run from 2020 through 2025. Focus the chart viewport and use Left/Right arrows to scroll on narrow screens. Complete axis labels stay here outside the scrolling chart; the table gives exact values and availability.

Population observations for Ada County (GEOID 16001), persons
DatePopulation (persons)Interval
April 1, 2020 base494,966Estimates base; not July 1
July 1, 2020498,263April–July partial-year; no annual rate
July 1, 2021513,092July 2020–July 2021 comparison
July 1, 2022520,365July-to-July estimate
July 1, 2023526,352July-to-July estimate
July 1, 2024535,225July-to-July estimate
July 1, 2025546,141July-to-July estimate

County population and median home value · different vintages

Each point pairs a county’s PEP July 1, 2025 resident population (persons) with its ACS 2024 5-year median owner-occupied home value (B25077, U.S. dollars). These are different reference periods and different statistical programs. This descriptive comparison does not imply causality or matched vintages. Suppressed, missing or invalid ACS estimates are unavailable, not zero and not plotted. A valid zero remains zero.

The exact-value table below works without JavaScript; chart loading requires JavaScript.

Select a county using the map or rankings to coordinate the comparison.

County comparison: PEP July 1, 2025 population (persons) and ACS 2024 5-year median owner-occupied home value (U.S. dollars); unavailable values identified
CountyGEOIDPEP July 1, 2025 population (persons)ACS 2024 5-year median home value (U.S. dollars)
Ada County16001546,141$512,300
Adams County160035,013$376,500
Bannock County1600591,591$300,700
Bear Lake County160076,727$275,000
Benewah County1600910,508$293,500
Bingham County1601151,153$293,300
Blaine County1601325,517$735,300
Boise County160158,545$476,100
Bonner County1601754,420$487,900
Bonneville County16019135,771$368,800
Boundary County1602113,997$410,500
Butte County160232,783$217,600
Camas County160251,316$304,000
Canyon County16027275,123$390,000
Caribou County160297,252$241,500
Cassia County1603126,397$284,600
Clark County16033783$216,900
Clearwater County160359,118$268,200
Custer County160374,636$381,700
Elmore County1603929,465$316,500
Franklin County1604115,889$372,600
Fremont County1604314,208$314,200
Gem County1604521,773$428,700
Gooding County1604716,446$250,900
Idaho County1604917,874$310,200
Jefferson County1605135,297$408,400
Jerome County1605326,362$271,800
Kootenai County16055191,864$518,700
Latah County1605741,842$368,600
Lemhi County160598,474$326,100
Lewis County160613,704$225,300
Lincoln County160635,603$255,600
Madison County1606555,172$414,800
Minidoka County1606722,911$262,600
Nez Perce County1606942,905$334,700
Oneida County160715,085$272,000
Owyhee County1607312,661$359,800
Payette County1607527,824$341,800
Power County160778,246$212,900
Shoshone County1607914,130$267,400
Teton County1608113,254$690,500
Twin Falls County1608397,539$337,900
Valley County1608512,831$657,000
Washington County1608711,583$278,100