Bordering states

Arizona vs New Mexico

Short answer

Arizona has 7,582,384 residents, 3.6 times New Mexico's 2,130,256. New Mexico is the larger by land, 1.07 times the size of Arizona.
AZ
7,582,384
NM
2,130,256

The two states, county by county

Both maps share one density scale, so the same shade means the same number of people per square mile on either side of the border. Darker counties are denser. Select a county to open its page.

Arizona

Gila County: 11.4 per sq miMohave County: 17.0 per sq miYavapai County: 31.0 per sq miMaricopa County: 507.8 per sq miGraham County: 8.7 per sq miGreenlee County: 5.1 per sq miApache County: 5.8 per sq miPinal County: 95.8 per sq miCoconino County: 7.8 per sq miYuma County: 40.0 per sq miSanta Cruz County: 40.9 per sq miPima County: 117.6 per sq miCochise County: 20.3 per sq miNavajo County: 11.0 per sq miLa Paz County: 3.8 per sq mi

New Mexico

De Baca County: 0.7 per sq miRoosevelt County: 7.7 per sq miGuadalupe County: 1.4 per sq miLos Alamos County: 180.3 per sq miChaves County: 10.5 per sq miQuay County: 2.9 per sq miGrant County: 7.0 per sq miHarding County: 0.3 per sq miSan Miguel County: 5.6 per sq miCatron County: 0.5 per sq miSocorro County: 2.4 per sq miMcKinley County: 12.6 per sq miLuna County: 8.7 per sq miTorrance County: 4.8 per sq miCurry County: 33.6 per sq miHidalgo County: 1.2 per sq miRio Arriba County: 6.8 per sq miOtero County: 10.5 per sq miSierra County: 2.7 per sq miBernalillo County: 578.5 per sq miValencia County: 75.8 per sq miUnion County: 1.0 per sq miLincoln County: 4.1 per sq miEddy County: 14.7 per sq miDoña Ana County: 60.2 per sq miSan Juan County: 21.9 per sq miCibola County: 5.9 per sq miMora County: 2.1 per sq miColfax County: 3.3 per sq miLea County: 17.1 per sq miSanta Fe County: 82.6 per sq miTaos County: 15.7 per sq miSandoval County: 42.5 per sq mi
People per sq mi
  1. < 3
  2. < 7
  3. < 13
  4. < 40
  5. ≥ 40
no data

Residents, 2024

  1. 01Arizona7,582,384
  2. 02New Mexico2,130,256

Land, square miles

  1. 01Arizona113,655
  2. 02New Mexico121,313

People per square mile

  1. 01Arizona66.7
  2. 02New Mexico17.6

Median county household income

  1. 01Arizona$61,225
  2. 02New Mexico$51,111

Side by side

MeasureArizonaNew Mexico
Residents, 20247,582,3842,130,256
Rank by population14th36th
Land, sq mi113,655121,313
People per sq mi66.717.6
County-equivalents1533
Median county residents125,77326,428
Median county income$61,225$51,111
Most populous countyMaricopa CountyBernalillo County
Largest county by landCoconino CountyCatron County
CapitalPhoenixSanta Fe
Daylight at capital, June 2114 h 22 min14 h 35 min
Census divisionMountainMountain
Census Vintage 2024 population, 2024 Gazetteer land area, SAIPE 2023 income. Daylight computed with SunCalc.

Population and density

Arizona has 7,582,384 residents, 3.6 times New Mexico's 2,130,256. Arizona ranks 14th and New Mexico 36th of the 50 states and DC. Arizona is the more crowded, with 66.7 people per square mile against 17.6, 3.8 times.

Land area

New Mexico has 121,313 square miles of land, 7% more than Arizona's 113,655. The largest county-equivalent in Arizona is Coconino County at 18,616 square miles; in New Mexico it is Catron County at 6,924.

Counties

New Mexico is divided into 33 county-equivalents and Arizona into 15, so an average New Mexico county covers 3,676 square miles against 7,577. The typical county in Arizona has 125,773 residents, against 26,428 in New Mexico. The most populous are Maricopa County (4,673,096) and Bernalillo County (671,747).

No county name appears in both states, so a county name alone is enough to tell which state a row belongs to.

Household income

The median county in Arizona has a household income of $61,225, 20% above New Mexico's $51,111. The highest county incomes are Maricopa County ($86,973) in Arizona and Los Alamos County ($146,208) in New Mexico, from SAIPE 2023.

Capitals and daylight

Phoenix and Santa Fe are 382 miles apart in a straight line; from Phoenix the initial bearing is 64°, ENE. On June 21, 2026, Phoenix gets 14 h 22 min of daylight and Santa Fe 14 h 35 min; on December 21 the figures are 9 h 56 min and 9 h 44 min. Month by month tables are on the Phoenix and Santa Fe daylight pages.

Where they sit

Both are in the Census Mountain division of the West region. By county internal points, Arizona spans 2 UTM zones and New Mexico 2.

Questions people ask

Which is bigger, Arizona or New Mexico?

New Mexico, with 121,313 square miles of land against 113,655, 1.07 times as large.

Which has more people, Arizona or New Mexico?

Arizona has 7,582,384 residents, 3.6 times New Mexico's 2,130,256.

How far is Phoenix from Santa Fe?

382 miles in a straight line, heading ENE (64°) from Phoenix.

Do Arizona and New Mexico have counties with the same name?

No. None of their county-level units share a name.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Bureau regions and divisions of the United States (last verified 2026-09-30)

How every number is computed: methodology. Spotted a wrong figure? Report an error.