The map above shows Colorado and New Mexico side by side at exactly the same scale, using equal-area projections, so their true relative sizes are preserved.
Colorado vs New Mexico Geography
Land area
- Colorado has a land area of 103,637 square miles (268,419 km²), while New Mexico has 121,313 square miles (314,198 km²).
- New Mexico's land area is 1.2 times (17%) larger than Colorado's.
Total area
- Colorado: 104,095 square miles (269,605 km²) vs New Mexico: 121,593 square miles (314,925 km²), including inland and coastal water.
- New Mexico's total area is 1.2 times (17%) larger than Colorado's.
Length
- Colorado is 467 miles (751 km) long from north to south; New Mexico is 395 miles (635 km).
- Colorado's north-south length is 1.2 times (18%) longer than New Mexico's.
Width
- Colorado spans 387 miles (622 km) east to west; New Mexico spans 498 miles (801 km).
- New Mexico's east-west width is 1.3 times (29%) wider than Colorado's.
Highest point
- Colorado's highest point is Mount Elbert at 14,422 feet (4,396 m); New Mexico's is Wheeler Peak at 13,150 feet (4,008 m).
- Mount Elbert is 1,272 feet higher than Wheeler Peak.
Lowest point
- Colorado's lowest point is Arikaree River at 3,326 feet; New Mexico's is Red Bluff Reservoir at 2,842 feet.
- New Mexico's lowest point is 484 feet lower.
Colorado vs New Mexico Population and History
Population
- Colorado has a population of 5,957,493 (2024), while New Mexico has 2,130,256 (2024).
- Colorado's population is 2.8 times (180%) larger than New Mexico's.
Population density
- Colorado: 57.5 people per square mile vs New Mexico: 17.6.
- Colorado's population density is 3.3 times (227%) higher than New Mexico's.
Biggest city
- Colorado's biggest city is Denver with 729,019 people; New Mexico's is Albuquerque with 560,326.
- Denver's population is 1.3 times (30%) larger than Albuquerque's.
Largest metro area
- Colorado's largest metropolitan area is Denver-Aurora-Centennial, CO metro area (3,052,498 people) vs New Mexico's Albuquerque, NM metro area (926,303).
- Denver-Aurora-Centennial, CO metro area's population is 3.3 times (230%) larger than Albuquerque, NM metro area's.
History
- Colorado: Admitted to the Union on August 1, 1876, as the 38th state.
- New Mexico: Admitted to the Union on January 6, 1912, as the 47th state.
- In its current form, Colorado is the older of the two by 36 years.
Colorado vs New Mexico Economy
GDP
- Colorado's GDP is $557.6 billion (2024) vs New Mexico's $147.1 billion.
- Colorado's economic output is 3.8 times (279%) larger than New Mexico's.
GDP per capita
- Colorado: $93,602 per person vs New Mexico: $69,046.
- Colorado's GDP per capita is 1.4 times (36%) higher than New Mexico's.
Average income
- Colorado: $83,055 vs New Mexico: $58,249 average income per person (per capita personal income).
- Colorado's average income is 1.4 times (43%) higher than New Mexico's.
Colorado vs New Mexico Counties
Number of counties
- Colorado has 64 counties, while New Mexico has 33.
- Colorado's county count is 1.9 times (94%) higher than New Mexico's.
Biggest county by area
- Colorado's largest county is Las Animas County at 4,773 square miles; New Mexico's is Catron County at 6,924 square miles.
- Catron County's land area is 1.5 times (45%) larger than Las Animas County's.
Smallest county by area
- Colorado: Broomfield County (33 sq mi) vs New Mexico: Los Alamos County (109 sq mi).
- Los Alamos County's land area is 3.3 times (231%) larger than Broomfield County's.
Most populous county
- Colorado: El Paso County (752,772 people) vs New Mexico: Bernalillo County (671,747 people).
- El Paso County's population is 1.1 times (12%) larger than Bernalillo County's.
Least populous county
- Colorado: Hinsdale County (747 people) vs New Mexico: Harding County (635 people).
- Hinsdale County's population is 1.2 times (18%) larger than Harding County's.
Richest county
- Colorado: Pitkin County ($275,044 per capita income) vs New Mexico: Los Alamos County ($98,378).
- Pitkin County's income is 2.8 times (180%) richer than Los Alamos County's.
Poorest county
- Colorado: Crowley County ($27,232 per capita income) vs New Mexico: Cibola County ($36,397).
- Cibola County's income is 1.3 times (34%) richer than Crowley County's.
Colorado vs New Mexico Taxes
State income tax
- Colorado has a top income tax rate of 4.4%, while New Mexico has a top income tax rate of 5.9%.
- New Mexico's top rate is 1.5 percentage points higher.
Property tax
- Colorado: 0.49% effective rate vs New Mexico: 0.63% of home value per year.
- New Mexico's rate is 0.14 percentage points higher.
Sales tax
- Colorado: 7.89% combined state and average local rate vs New Mexico: 7.68%.
- Colorado's combined rate is 0.21 percentage points higher.
Official Websites
Colorado official website · New Mexico official website
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More Size Comparisons
All Colorado 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.