The map above shows Arizona and New Mexico side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Arizona vs New Mexico Geography
Land area: Arizona has a land area of 113,655 square miles (294,366 km²), while New Mexico has 121,313 square miles (314,198 km²). New Mexico's land area is 1.1 times (7%) larger than Arizona's.
Total area: Arizona: 113,985 square miles (295,220 km²) vs New Mexico: 121,593 square miles (314,925 km²), including inland and coastal water. New Mexico's total area is 1.1 times (7%) larger than Arizona's.
Length: Arizona is 429 miles (690 km) long from north to south; New Mexico is 395 miles (635 km). Arizona's north-south length is 1.1 times (9%) longer than New Mexico's.
Width: Arizona spans 452 miles (727 km) east to west; New Mexico spans 498 miles (801 km). New Mexico's east-west width is 1.1 times (10%) wider than Arizona's.
Highest point: Arizona's highest point is Humphreys Peak at 12,620 feet (3,847 m); New Mexico's is Wheeler Peak at 13,150 feet (4,008 m). Wheeler Peak is 530 feet higher than Humphreys Peak.
Lowest point: Arizona's lowest point is Colorado River at 71 feet; New Mexico's is Red Bluff Reservoir at 2,842 feet. Arizona's lowest point is 2,771 feet lower.
Arizona vs New Mexico Population and History
Population: Arizona has a population of 7,582,384 (2024), while New Mexico has 2,130,256 (2024). Arizona's population is 3.6 times (256%) larger than New Mexico's.
Population density: Arizona: 66.7 people per square mile vs New Mexico: 17.6. Arizona's population density is 3.8 times (279%) higher than New Mexico's.
Biggest city: Arizona's biggest city is Phoenix with 1,673,164 people; New Mexico's is Albuquerque with 560,326. Phoenix's population is 3.0 times (199%) larger than Albuquerque's.
Largest metro area: Arizona's largest metropolitan area is Phoenix-Mesa-Chandler, AZ metro area (5,186,958 people) vs New Mexico's Albuquerque, NM metro area (926,303). Phoenix-Mesa-Chandler, AZ metro area's population is 5.6 times (460%) larger than Albuquerque, NM metro area's.
History: Arizona: Admitted to the Union on February 14, 1912, as the 48th state. New Mexico: Admitted to the Union on January 6, 1912, as the 47th state.
Arizona vs New Mexico Economy
GDP: Arizona's GDP is $570.1 billion (2024) vs New Mexico's $147.1 billion. Arizona's economic output is 3.9 times (288%) larger than New Mexico's.
GDP per capita: Arizona: $75,186 per person vs New Mexico: $69,046. Arizona's GDP per capita is 1.1 times (9%) higher than New Mexico's.
Average income: Arizona: $65,798 vs New Mexico: $58,249 average income per person (per capita personal income). Arizona's average income is 1.1 times (13%) higher than New Mexico's.
Arizona vs New Mexico Counties
Number of counties: Arizona has 15 counties, while New Mexico has 33. New Mexico's county count is 2.2 times (120%) higher than Arizona's.
Biggest county by area: Arizona's largest county is Coconino County at 18,616 square miles; New Mexico's is Catron County at 6,924 square miles. Coconino County's land area is 2.7 times (169%) larger than Catron County's.
Smallest county by area: Arizona: Santa Cruz County (1,236 sq mi) vs New Mexico: Los Alamos County (109 sq mi). Santa Cruz County's land area is 11.3 times larger than Los Alamos County's.
Most populous county: Arizona: Maricopa County (4,673,096 people) vs New Mexico: Bernalillo County (671,747 people). Maricopa County's population is 7.0 times (596%) larger than Bernalillo County's.
Least populous county: Arizona: Greenlee County (9,410 people) vs New Mexico: Harding County (635 people). Greenlee County's population is 14.8 times larger than Harding County's.
Richest county: Arizona: Maricopa County ($72,176 per capita income) vs New Mexico: Los Alamos County ($98,378). Los Alamos County's income is 1.4 times (36%) richer than Maricopa County's.
Poorest county: Arizona: Graham County ($44,164 per capita income) vs New Mexico: Cibola County ($36,397). Graham County's income is 1.2 times (21%) richer than Cibola County's.
Arizona vs New Mexico Taxes
State income tax: Arizona has a top income tax rate of 2.5%, while New Mexico has a top income tax rate of 5.9%. New Mexico's top rate is 3.4 percentage points higher.
Property tax: Arizona: 0.43% effective rate vs New Mexico: 0.63% of home value per year. New Mexico's rate is 0.2 percentage points higher.
Sales tax: Arizona: 8.54% combined state and average local rate vs New Mexico: 7.68%. Arizona's combined rate is 0.86 percentage points higher.
Official Websites
Arizona official website · New Mexico official website
More Size Comparisons
All Arizona size comparisons · All New Mexico size comparisons
Area, elevation and boundary figures come from official national statistics and US Census Bureau and Natural Earth boundary data; US state population, economic, county and tax figures come from the US Census Bureau, the Bureau of Economic Analysis and the Tax Foundation. Figures are rounded and for general reference.