California · San Diego County
San Diego Authority
Also known as: Sandiego Metro Authority
San Diego is a high-income large city of 1,389,526 with home prices 1.2× the California median.
San Diego is one of those places that has, over time, accumulated enough superlatives that the superlatives themselves have become unremarkable. What is perhaps more interesting, and more useful, is the actual texture of the place as federal data describes it: a large, sun-warmed coastal city where housing costs have drifted well beyond what most incomes can comfortably reach, where the air is mostly fine but not always, and where a median resident is 36 years old and lives among roughly 1.39 million neighbors.
Population and Demographics
According to Census ACS 5-Year 2024 data, San Diego's total population stands at 1,389,526, making it one of the largest cities in the United States by headcount. The median age is 36.2 years. Children under 18 account for 18.4 percent of the population, a figure that places the city in a family-oriented character category, though not an unusually young one.
The Census ACS 5-Year 2023 data records 522,146 total households, of which 307,817 are family households. The city's racial and ethnic composition, per the same source, includes 698,475 white residents, 243,516 Asian residents, 78,886 Black residents, and 409,493 Hispanic or Latino residents.
Housing Affordability
The relationship between what San Diego homes cost and what San Diego residents earn is, to put it plainly, strained. Derived from Census income, housing, and poverty data, the home price-to-income ratio sits at 8.4, a figure that places the city in the "very expensive" category for home affordability. To put that in context: a ratio above roughly 5 is generally considered to indicate a market where ownership is out of reach for median earners without substantial outside assistance.
Rental costs tell a somewhat different story. Rent as a percentage of median income is 24.7 percent, which the same derived data classifies as "affordable" — meaning renters, on average, are not spending the majority of their income on housing, even if buyers face a steep climb.
Climate
San Diego's climate is the thing people mention first, and the data does not contradict them. According to NOAA ACIS, measured at the San Diego Montgomery Field station approximately 1.8 miles from the city center, the average temperature is 65.2 degrees Fahrenheit and annual precipitation is 10.8 inches. That is a remarkably dry figure — less than many desert cities receive — and it shapes everything from landscaping to wildfire risk to the particular quality of light that photographers and filmmakers have been chasing here for over a century.
Air Quality
The EPA AQI Annual Summary for 2024 recorded 366 days with measurable air quality index data. Of those, 47 were classified as "good," 267 as "moderate," and 48 as unhealthy for sensitive groups. Four days were classified as outright unhealthy. No days reached the "very unhealthy" or "hazardous" thresholds. The maximum AQI recorded was 161. The practical picture is a city where the air is rarely dangerous but is also rarely pristine — the moderate-day majority reflects the persistent influence of vehicle emissions, regional wildfire smoke, and marine layer interactions that characterize coastal Southern California.
Broadband Access
According to FCC Broadband Data Collection figures as of June 2025, San Diego shows 100 percent coverage at the 25/3 Mbps threshold, 100 percent at 100/20 Mbps, and 100 percent at 250/25 Mbps across its 622,631 housing units. Coverage at the 1,000/100 Mbps tier reaches approximately 58.7 percent of units. These figures represent availability, not subscription rates — the distinction matters in a city where cost of living may affect take-up even where infrastructure exists.
Education
NCES IPEDS 2022 data identifies 35 colleges and universities operating in San Diego. Among them, according to College Scorecard data, San Diego State University enrolls 35,377 students, carries an admission rate of 36.2 percent, and reports a completion rate of 77.3 percent. In-state tuition is listed at $8,728; out-of-state tuition at $21,328.
The city also supports 302 licensed childcare centers, per state licensing data, ranging from infant care to preschool programs. A partial list includes facilities such as A Brighter Future Preschool & CDC, reflecting a childcare infrastructure that, while substantial in number, is distributed across a geographically large city.
Civic and Community Infrastructure
The IRS Exempt Organizations Business Master File identifies 742 religious congregations operating in San Diego, a count that reflects the city's considerable size and the diversity of its communities. The same source lists 34 arts organizations, including the San Diego Symphony Foundation, the San Diego Youth Symphony, and the San Diego Civic Youth Ballet, among others.
Civic service organizations number 38 by the same accounting, with notable entries including Jacobs & Cushman San Diego Food Bank, located at 9850 Distribution Ave, and the Greater San Diego Boys & Girls Clubs Foundation. Animal welfare infrastructure includes 19 organizations, among them the San Diego Humane Society Foundation and the Escondido Humane Society Foundation.
The FDIC Institutions and Branches database records multiple bank branches operating within city limits, including a Bank of America Torrey Hills Branch at 11190 E Ocean Air Dr and a Citibank branch, among others.
Chamber of Commerce
The IRS Exempt Organizations BMF identifies the German American Chamber of Commerce California Inc as the matched chamber of commerce entity for San Diego through the canonical registry. This is one of those facts that rewards a second look — a city of 1.39 million people on the Pacific coast, with deep ties to Mexico and a large military presence, is matched in the federal registry to a German-American trade organization. The registry reflects what organizations have filed, not necessarily the full landscape of business advocacy in the region.
Regulatory Context
California Business and Professions Code Section 7031.5 requires that any county or city issuing building permits also require permit applicants to file a signed statement confirming contractor licensure, or to state the basis for any claimed exemption. Violations carry a civil penalty of up to $500. This provision applies to construction, alteration, improvement, demolition, and repair work, and shapes the permitting environment for the substantial volume of development activity that a city of San Diego's size generates.
Further Reading
- Census Bureau, American Community Survey 5-Year Estimates — https://data.census.gov
- EPA, Air Quality Index Annual Summary 2024 — U.S. Environmental Protection Agency
- NCES, Common Core of Data — https://nces.ed.gov/ccd/
- FDIC, Institutions and Branches Database — Federal Deposit Insurance Corporation
- FCC, Broadband Data Collection — Federal Communications Commission