U.S. Census Bureau · 2025 Population Estimates Program (PEP)
Arizona County Population — 2025 PEP
July 1, 2025 resident population estimates for 15 counties. State total (sum of these county estimates): 7,623,818 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: 7,623,818 persons (SUMLEV 040, PEP Vintage 2025). County sum: 7,623,818 persons; comparison status: equal.
Official NST July 2020: 7,186,647 persons; July 2020–July 2025 change: +437,171 persons; growth: 6.083101 percent (denominator: official July 2020 population).
County July 2024–July 2025: Growing: 10 · Shrinking: 5 · Unchanged: 0 · Missing: 0. Median county growth: 0.349571 percent.
Largest county: Maricopa County (GEOID 04013): 4689558 persons.
Fastest county growth: Pinal County (GEOID 04021): 4.586544 percent.
Greatest numeric increase: Maricopa County (GEOID 04013): 35411 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: 7,623,818 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.
| Measure | Count | Share |
|---|---|---|
| Female | 3,854,195 persons | 50.554656 percent |
| Male | 3,769,623 persons | 49.445344 percent |
| Ages 18–24 | 742,283 persons | 9.736368 percent |
| Ages 25–44 | 1,995,545 persons | 26.175140 percent |
| Ages 45–64 | 1,716,902 persons | 22.520239 percent |
| Ages 65 and older | 1,571,773 persons | 20.616612 percent |
| Under 18 | 1,597,315 persons | 20.951641 percent |
| American Indian or Alaska Native alone | 425,209 persons | 5.577376 percent |
| Asian alone | 343,873 persons | 4.510509 percent |
| Black or African American alone | 449,801 persons | 5.899944 percent |
| Native Hawaiian or other Pacific Islander alone | 23,056 persons | 0.302421 percent |
| Two or more races | 393,833 persons | 5.165824 percent |
| White alone | 5,988,046 persons | 78.543926 percent |
| Hispanic (any race) | 2,479,648 persons | 32.525016 percent |
| Not Hispanic | 5,144,170 persons | 67.474984 percent |
Official state median age: 39.4 years. Published state SYASEX median age; not a county aggregation, not ACS.
Revised April 1, 2020 estimates base (official NST): 7,158,104 persons; county base sum: 7,158,104 persons; comparison: equal. This is not the original decennial census count.
Original April 1, 2020 Census count: 15 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.
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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 · Maricopa County (GEOID 04013). 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.
| Classification / source | Count or statistic | Share / status |
|---|---|---|
| Sex · PEP male | 2,312,334 persons | 49.308144 percent |
| Sex · PEP female | 2,377,224 persons | 50.691856 percent |
| Age bands · PEP under18 | 1,017,556 persons | 21.698335 percent |
| Age bands · PEP age18 24 | 451,489 persons | 9.627538 percent |
| Age bands · PEP age25 44 | 1,312,481 persons | 27.987307 percent |
| Age bands · PEP age45 64 | 1,078,400 persons | 22.995771 percent |
| Age bands · PEP age65plus | 829,632 persons | 17.691049 percent |
| Race alone (partition) · PEP white alone | 3,650,809 persons | 77.849746 percent |
| Race alone (partition) · PEP black alone | 336,193 persons | 7.168970 percent |
| Race alone (partition) · PEP aian alone | 167,441 persons | 3.570507 percent |
| Race alone (partition) · PEP asian alone | 268,997 persons | 5.736084 percent |
| Race alone (partition) · PEP nhpi alone | 15,197 persons | 0.324060 percent |
| Race alone (partition) · PEP two or more | 250,921 persons | 5.350632 percent |
| Hispanic origin (overlaps race) · PEP hispanic any race | 1,514,398 persons | 32.292979 percent |
| Hispanic origin (overlaps race) · PEP not hispanic | 3,175,160 persons | 67.707021 percent |
| Other overlapping classifications (not additive) · PEP white alone or combination | 3,883,172 persons | 82.804648 percent |
| Other overlapping classifications (not additive) · PEP not hispanic white alone | 2,383,357 persons | 50.822636 percent |
| Official county median age · AGESEX MEDIAN_AGE_TOT | 37.8 years | Not 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 15 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 15 counties; ranked by 2025 population, descending.
| Rank | County | GEOID | Population (persons) | Signed change (persons) | Signed change (percent) |
|---|---|---|---|---|---|
| 1 | Maricopa County | 04013 | 4,689,558 | +35411 persons | +0.760848% |
| 2 | Pima County | 04019 | 1,074,685 | +1229 persons | +0.114490% |
| 3 | Pinal County | 04021 | 539,380 | +23654 persons | +4.586544% |
| 4 | Yavapai County | 04025 | 252,552 | +1356 persons | +0.539818% |
| 5 | Mohave County | 04015 | 228,102 | +1840 persons | +0.813217% |
| 6 | Yuma County | 04027 | 224,449 | +3061 persons | +1.382640% |
| 7 | Coconino County | 04005 | 144,368 | -290 persons | -0.200473% |
| 8 | Cochise County | 04003 | 126,332 | +1133 persons | +0.904959% |
| 9 | Navajo County | 04017 | 109,946 | +383 persons | +0.349571% |
| 10 | Apache County | 04001 | 64,445 | -250 persons | -0.386429% |
| 11 | Gila County | 04007 | 53,801 | -325 persons | -0.600451% |
| 12 | Santa Cruz County | 04023 | 50,020 | +255 persons | +0.512408% |
| 13 | Graham County | 04009 | 40,157 | -82 persons | -0.203782% |
| 14 | La Paz County | 04012 | 16,711 | +41 persons | +0.245951% |
| 15 | Greenlee County | 04011 | 9,312 | -22 persons | -0.235697% |
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 Maricopa County (GEOID 04013). 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.
| Date | Population (persons) | Interval |
|---|---|---|
| April 1, 2020 base | 4,425,302 | Estimates base; not July 1 |
| July 1, 2020 | 4,445,025 | April–July partial-year; no annual rate |
| July 1, 2021 | 4,500,059 | July 2020–July 2021 comparison |
| July 1, 2022 | 4,559,561 | July-to-July estimate |
| July 1, 2023 | 4,601,077 | July-to-July estimate |
| July 1, 2024 | 4,654,147 | July-to-July estimate |
| July 1, 2025 | 4,689,558 | July-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 | GEOID | PEP July 1, 2025 population (persons) | ACS 2024 5-year median home value (U.S. dollars) |
|---|---|---|---|
| Apache County | 04001 | 64,445 | $63,700 |
| Cochise County | 04003 | 126,332 | $218,300 |
| Coconino County | 04005 | 144,368 | $448,000 |
| Gila County | 04007 | 53,801 | $269,400 |
| Graham County | 04009 | 40,157 | $212,000 |
| Greenlee County | 04011 | 9,312 | $158,600 |
| La Paz County | 04012 | 16,711 | $135,800 |
| Maricopa County | 04013 | 4,689,558 | $452,800 |
| Mohave County | 04015 | 228,102 | $281,000 |
| Navajo County | 04017 | 109,946 | $201,500 |
| Pima County | 04019 | 1,074,685 | $319,700 |
| Pinal County | 04021 | 539,380 | $349,000 |
| Santa Cruz County | 04023 | 50,020 | $233,000 |
| Yavapai County | 04025 | 252,552 | $425,200 |
| Yuma County | 04027 | 224,449 | $217,800 |