Rio del Mar, CA Demographics

A map of Rio del Mar's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	7,310	6,964	79.4%	76.3%
Hispanic	1,018	1,202	11.1%	13.2%
Multiracial	508	473	5.5%	5.2%
Asian	292	351	3.2%	3.8%
Native American/Other	63	82	0.7%	0.9%
Black	10	56	0.1%	0.6%

Rio del Mar, California has an estimated population of 9,201, a less than 1% change from the 9,128 recorded in the 2020 Census. The population is 79.4% White, 11.1% Hispanic, 5.5% Multiracial, 3.2% Asian, 0.7% Native American/Other, and 0.1% Black. This demographic dot map shows the population of Rio del Mar, with one dot drawn for each person counted by the Census, color-coded by race.

Rio del Mar has become less racially diverse since the 2020 Census. It is considerably less diverse than California overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Rio del Mar, that probability was 39.6% in 2020 and 35.3% in the most recent ACS estimates.

Rio del Mar is ranked the 513th most populous place in California, out of 1,618 places. This ranking is based on the Census definition of a place, which includes incorporated places like cities, towns, and villages, as well as unincorporated census-designated places (CDPs). Rio del Mar was ranked the 515th most populous place in the 2020 Census.

Rio del Mar's White Population

7,310 residents of Rio del Mar, or 79.4% of the population, identify as White. The share of White residents in Rio del Mar is significantly higher than in California overall, where 33.8% of the population is White. Rio del Mar ranks 363rd statewide in terms of White residents as a share of the population, out of 1,618 places.

Since the 2020 Census, Rio del Mar's White population has grown by an estimated 5.0%. White residents' share of Rio del Mar's population has increased from 76.3% to 79.4%.

Rio del Mar is more White than neighboring Aptos (77.5% White), Seacliff (65.1% White), La Selva Beach (78.8% White), Aptos Hills-Larkin Valley (78.4% White), and Capitola (63.5% White).

Rio del Mar's Black Population

10 residents of Rio del Mar, or 0.1% of the population, identify as Black. The share of Black residents in Rio del Mar is lower than in California overall, where 5.2% of the population is Black. Rio del Mar ranks 971st statewide in terms of Black residents as a share of the population, out of 1,618 places.

Since the 2020 Census, Rio del Mar's Black population has declined by an estimated 82.1%. Black residents' share of Rio del Mar's population has decreased from 0.6% to 0.1%.

Rio del Mar is more Black than neighboring La Selva Beach (0% Black), and Aptos Hills-Larkin Valley (0% Black). Rio del Mar is less Black than neighboring Aptos (0.2% Black), Seacliff (0.7% Black), and Capitola (1.1% Black).

Rio del Mar's Asian Population

292 residents of Rio del Mar, or 3.2% of the population, identify as Asian. The share of Asian residents in Rio del Mar is considerably lower than in California overall, where 15.3% of the population is Asian. Rio del Mar ranks 573rd statewide in terms of Asian residents as a share of the population, out of 1,618 places.

Since the 2020 Census, Rio del Mar's Asian population has declined by an estimated 16.8%. Asian residents' share of Rio del Mar's population has decreased from 3.8% to 3.2%.

Rio del Mar is more Asian than neighboring Aptos (2.2% Asian), and La Selva Beach (2.4% Asian). Rio del Mar is less Asian than neighboring Seacliff (3.3% Asian), Aptos Hills-Larkin Valley (7.1% Asian), and Capitola (3.8% Asian).

Rio del Mar's Hispanic Population

1,018 residents of Rio del Mar, or 11.1% of the population, identify as Hispanic. The share of Hispanic residents in Rio del Mar is significantly lower than in California overall, where 40.2% of the population is Hispanic. Rio del Mar ranks 1107th statewide in terms of Hispanic residents as a share of the population, out of 1,618 places.

Since the 2020 Census, Rio del Mar's Hispanic population has declined by an estimated 15.3%. Hispanic residents' share of Rio del Mar's population has decreased from 13.2% to 11.1%.

Rio del Mar is more Hispanic than neighboring La Selva Beach (10% Hispanic). Rio del Mar is less Hispanic than neighboring Aptos (15.8% Hispanic), Seacliff (16.1% Hispanic), Aptos Hills-Larkin Valley (13.1% Hispanic), and Capitola (26.5% Hispanic).

Rio del Mar's Native American/Other Population

63 residents of Rio del Mar, or 0.7% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Rio del Mar is comparable to the share in California overall, where 1.2% of the population is Native American/Other. Rio del Mar ranks 1124th statewide in terms of Native American/Other residents as a share of the population, out of 1,618 places.

Since the 2020 Census, Rio del Mar's Native American/Other population has declined by an estimated 23.2%. Native American/Other residents' share of Rio del Mar's population has remained roughly unchanged at 0.7%.

Rio del Mar is more Native American/Other than neighboring Aptos Hills-Larkin Valley (0% Native American/Other), and Capitola (0.3% Native American/Other). Rio del Mar is less Native American/Other than neighboring Aptos (1.2% Native American/Other), Seacliff (4.8% Native American/Other), and La Selva Beach (1.5% Native American/Other).

Rio del Mar's Multiracial Population

508 residents of Rio del Mar, or 5.5% of the population, identify as Multiracial. The share of Multiracial residents in Rio del Mar is comparable to the share in California overall, where 4.4% of the population is Multiracial. Rio del Mar ranks 678th statewide in terms of Multiracial residents as a share of the population, out of 1,618 places.

Since the 2020 Census, Rio del Mar's Multiracial population has grown by an estimated 7.4%. Multiracial residents' share of Rio del Mar's population has remained roughly unchanged at 5.5%.

Rio del Mar is more Multiracial than neighboring Aptos (3.1% Multiracial), Aptos Hills-Larkin Valley (1.4% Multiracial), and Capitola (4.8% Multiracial). Rio del Mar is less Multiracial than neighboring Seacliff (10.1% Multiracial), and La Selva Beach (7.2% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.