California

San Diego County

San Diego County has an estimated 3,282,248 residents as of 2025 across 18 incorporated places, a decline of 0.6% since 2020.

Population (2025)
3,282,248
Census Bureau estimate
Change since 2020
-0.6%
Resident population
Incorporated places
18
Cities, towns and CDPs
Unincorporated share
15%
Residents outside city limits

Industries in San Diego County

28,631 establishments indexed

Establishment and employment counts from the U.S. Census Bureau County Business Patterns program.

IndustryNAICSEstablishmentsEmployees
HVAC & Plumbing2382201,07212,748
Electrical23821095815,074
Roofing2381602532,142
Landscaping56173094311,099
Pest Control5617101822,044
Pool Service5617902741,185
Commercial Cleaning56172071010,718
Flooring2383302661,477
Glass & Glazing2381501141,081
Septic & Well2389102423,025
Auto Repair8111118743,830
Auto Body8111213082,608
Car Wash8111921851,634
Towing488410901,218
Trucking484110, 4841216343,969
Equipment Rental53241248683
Dental6212101,92712,563
Veterinary5419403715,075
Home Health62161029010,364
Pharmacy4461102914,668
Medical Practice6211112,57620,135
Optometry6213202311,378
Accounting541211, 5412131,0247,238
Insurance Agency5242101,2937,673
IT & MSP541513, 54151289612,561
Staffing561320, 56131141519,817
Engineering5413301,15922,711
Architecture5413103322,176
Law Firm5411102,53615,617
Security Services56161213411,547
Printing3231111681,707
Sign Shops33995077633
Machine Shops3327101692,538
Metal Fabrication332322, 332312561,321
Plastics326199472,386
Food Manufacturing311999, 311812571,332
Millwork337110, 32191876535
Restaurants7225112,65063,776
Bakeries3118111051,194
Liquor Stores4453104252,481
Gyms & Fitness71394057810,555
Salons & Spas812112, 812113, 8121991,8609,917
Laundromats812310117551
Dry Cleaning8123201771,156
Funeral Homes81221060444
Self Storage531130195610
Childcare6244108838,611
Pet Services8129103032,867

Cities in San Diego County

18
San Diego1.4MChula Vista275.5KOceanside170.5KEscondido146KCarlsbad112.3KEl Cajon101.8KVista98.3KSan Marcos94.9KEncinitas60.7KLa Mesa59.9KSantee58.2KNational City57.8KPoway49.2KLemon Grove27.9KImperial Beach25.2KCoronado21.1KSolana Beach12.6KDel Mar3.9K

Sources

  1. U.S. Census Bureau, Population Estimates Program (Vintage 2025). Subcounty resident population estimates. Retrieved 2026-09-08.