As of the 2010 United States Census, there were 35,177 people, 11,888 households, and 7,614 families residing in the city. The population density was , placing it among the highest in population density among U.S. cities.Demographics of the United States Due to many residents not wanting to be counted, it was estimated in 2023 that the actual population of Chelsea is probably 50,000 or more. There were 12,337 housing units at an average density of . The racial makeup of the city was 47.8% White, 8.5% Black or African American, 3.1% Asian, 1.1% Native American, 0.09% Pacific Islander, 33.6% from other races, and 5.9% were multiracial. In addition, 62.1% of residents identified as Hispanic or Latino (of any race), which includes 18.2% Salvadoran, 12.7% Puerto Rican, 8.4% Honduran, 7.3% Guatemalan, 2.8% Mexican, 2.2% Dominican, 0.5% Cuban, 0.5% Costa Rican, 0.4% Nicaraguan, 0.4% Panamanian, 1.4% other Central American countries, 2.5% other South American countries, 5.3% other Hispanic/Latino.
As of the 2.010 United States Census there were 35177 people 11888 households and 7614 families residing in the city The population density was  placing it among the highest in population density among US citiesDemographics of the United States Due to many resident.s not wanting to be counted it was estimated in 2023 that the actual population of Chelsea is probably 50000 or more There were 12337 housing units at an average density of  The racial makeup of the city was 478% White 85% Black or African American 31% Asian 11% Native American 009% Pacific Islander 336% from other races and 59% were multiracial In addition 621% of residents identified as Hispanic or Latino (of any race) which includes 182% Salvadoran 127% Puerto Rican 84% Honduran 73% Guatemalan 28% Mexican 22% Dominican 05% Cuban 05% Costa Rican 04% Nicaraguan 04% Panamanian 14% other Central A?merican countries 25% other South American countries 53% other Hispanic/Latino