State
County
Land Area (mi²)
12.6 sq mi
Density (mi²)
3,014.70/sq mi
2020 Growth Rate
-0.29%
Growth Since 2010
6.29%
Rank in State
Rank in Country
Martinez is a city located in Contra Costa County California. It is also the county seat of Contra Costa County. With a 2020 population of 38,079, it is the 212th largest city in California and the 1032nd largest city in the United States . Martinez is currently declining at a rate of -0.29% annually but its population has increased by 6.29% since the most recent census, which recorded a population of 35,824 in 2010. Martinez reached it's highest population of 38,411 in 2017. Spanning over 14 miles, Martinez has a population density of 3,015 people per square mile.
The average household income in Martinez is $128,788 with a poverty rate of 5.13%. The median rental costs in recent years comes to $1,728 per month, and the median house value is $596,400. The median age in Martinez is 42.6 years, 40.6 years for males, and 44.9 years for females.
According to the most recent ACS, the racial composition of Martinez was:
| Race | Population | Percentage |
|---|---|---|
| White | 28,869 | 75.40% |
| Asian | 3,367 | 8.79% |
| Two or More Races | 2,680 | 7.00% |
| Some Other Race | 1,974 | 5.16% |
| Black or African American | 1,296 | 3.38% |
| American Indian and Alaska Native | 104 | 0.27% |
| Type | Count | Average Size | Owned |
|---|---|---|---|
| All | 14,723 | 2.56 | 67.3 |
| Married | 7,496 | 3.26 | 78 |
| Non Family | 5,106 | 1.31 | 59.1 |
| Female | 1,719 | 3.11 | 47.8 |
| Male | 402 | 3.2 | 52.5 |
3.12
Average Family Size
2.56
Average Household Size
| Education Attained | Count | Percentage |
|---|---|---|
| Less Than 9th Grade | 571 | 2.08% |
| 9th to 12th Grade | 595 | 2.17% |
| High School Graduate | 5,125 | 18.66% |
| Some College | 6,668 | 24.28% |
| Associates Degree | 3,095 | 11.27% |
| Bachelors Degree | 7,481 | 27.24% |
| Graduate Degree | 3,933 | 14.32% |
| Race | Total | High School | Bachelors |
|---|---|---|---|
| White | 19,178 | 18,708 | 8,167 |
| Hispanic | 3,682 | 3,223 | 1,059 |
| Asian | 2,552 | 2,457 | 1,514 |
| 2+ Races | 1,464 | 1,371 | 542 |
| Other Race | 1,176 | 905 | 163 |
| Black | 973 | 902 | 313 |
| Native American | 89 | 83 | 45 |
The highest rate of high school graduation is among white people with a rate of 97.55%.
The highest rate of bachelors degrees is among asian people with a rate of 59.33%.
$63,549
Average Earnings
$74,310
Average Male
$54,178
Average Female
82.78% of Martinez residents speak only English, while 17.22% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 7.32% of the population.
| Name | Total | In Poverty | Poverty Rate |
|---|---|---|---|
| White | 25,178 | 1,052 | 4.18% |
| Hispanic | 6,258 | 290 | 4.63% |
| Other | 1,923 | 287 | 14.92% |
| Multiple | 2,617 | 228 | 8.71% |
| Black | 1,152 | 177 | 15.36% |
| Asian | 3,334 | 128 | 3.84% |
5.13%
Overall Poverty Rate
6.25%
Male Poverty Rate
4.07%
Female Poverty Rate
The race most likely to be in poverty in Martinez is Black, with 15.36% below the poverty level.
The race least likely to be in poverty in Martinez is Asian, with 3.84% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 1.39%. Among those working part-time, it was 8.10%, and for those that did not work, the poverty rate was 9.83%.
50.5%
Overall Marriage Rate
52.6%
Male Marriage Rate
48.5%
Female Marriage Rate
The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 45-54.
| Name | Veterans | % of Total |
|---|---|---|
| White | 1,742 | 7.42% |
| Hispanic | 232 | 5.33% |
| Black | 153 | 14.67% |
| Other Race | 65 | 4.36% |
| Asian | 53 | 1.87% |
| 2+ Races | 50 | 2.80% |
| Native American | 14 | 15.22% |
6.28%
Veteran Poverty Rate
27.11%
Veteran Disability Rate
68.4%
Labor Force Participation
65.7%
Employment Rate
3.9%
Unemployment Rate
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
87.76%
Native Born
12.24%
Foreign Born
3.94%
Non Citizen
8.31%
Naturalized
87.76% of Martinez residents were born in the United States, with 67.77% having been born in California. 3.94% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.
| Year | Population | Growth | Annual Growth Rate |
|---|---|---|---|
| 2021 | 38,079 | -109 | -0.29% |
| 2020 | 38,188 | -109 | -0.28% |
| 2019 | 38,297 | -109 | -0.28% |
| 2018 | 38,406 | -5 | -0.01% |
| 2017 | 38,411 | 86 | 0.22% |
| 2016 | 38,325 | 275 | 0.72% |
| 2015 | 38,050 | 577 | 1.54% |
| 2014 | 37,473 | 354 | 0.95% |
| 2013 | 37,119 | 294 | 0.80% |
| 2012 | 36,825 | 323 | 0.88% |
| 2011 | 36,502 | 345 | 0.95% |
| 2010 | 36,157 | 291 | 0.08% |
| 2000 | 35,866 | 4,058 | 1.21% |
| 1990 | 31,808 | 9,226 | 3.48% |
| 1980 | 22,582 | 6,076 | 3.18% |
| 1970 | 16,506 | 6,902 | 5.56% |
| 1960 | 9,604 | 1,336 | 1.51% |
| 1950 | 8,268 | 887 | 1.14% |
| 1940 | 7,381 | 812 | 1.17% |
| 1930 | 6,569 | 2,711 | 5.47% |
| 1920 | 3,858 | 1,743 | 6.20% |
| 1910 | 2,115 | 735 | 4.36% |
| 1900 | 1,380 | -220 | -1.47% |
| 1890 | 1,600 | 1,040 | 5.39% |
| 1870 | 560 | 0.00% |