City
San Diego
San Diego is a city record. City or town offices may handle local rules inside their limits, while county offices still handle records, taxes, courts, and many services.
Starting point
Confirm the address is inside local limits first.
If the address is inside San Diego, city or town offices may handle local permits, code, and services. If it is outside limits, county routing may be the better first stop.
A mailing city is not always the same as city government jurisdiction.
2025 population
1,406,106
Land area
326.028 sq mi
Water area
16.243 sq mi
Directory notes
Local layers to keep on the same page.
Confirm city or town limits.
A mailing address can use a nearby place name. If the address is outside limits, county offices may handle permits, code, and land-use routes.
County still matters.
San Diego County can still matter for assessor, tax collector, recorder, court, public health, social service, and election records.
Some layers are separate.
Water, sewer, fire, school, utilities, coast, earthquake maps, wildfire zones, parks, and trails may point outside city hall.
County layer
County shown for San Diego
Practical notes
Office, map, permit, and paperwork notes for San Diego
Place note · Cars and driving · Reviewed July 6, 2026
San Diego transit usually comes down to MTS and PRONTO
MTS runs many San Diego bus and Trolley trips, and PRONTO is the fare card or app layer riders use with those trips.
Place note · Home and property · Reviewed July 4, 2026
San Diego emergency alerts use the regional AlertSanDiego system
San Diego's Stay Informed page routes residents to Genasys Protect and AlertSanDiego for safety information and evacuation notifications.
Place note · Outdoors · Reviewed July 4, 2026
Sunset Cliffs visits work better when the bluff edge is respected
San Diego's Sunset Cliffs materials show why public access, bluff erosion, roads, sidewalks, and barriers all matter along this popular coast.
Place note · Rules and licenses · Reviewed July 3, 2026
Get It Done handles San Diego's everyday city requests
Get It Done gives San Diego residents one place to report many non-emergency city problems, request some services, and reach common city issue forms.
Place note · Rules and licenses · Reviewed July 3, 2026
San Diego County FBN filings are a public name record
San Diego County fictitious business name filings are handled by the Recorder/County Clerk, and the filing does not approve the business or replace other permits.
Place note · Money and taxes · Reviewed July 3, 2026
San Diego County property tax splits value from collection
San Diego County property tax questions usually begin with the Assessor for value and records, or the Treasurer-Tax Collector for tax bills and payments.
Almanac notes
Stories and local context near San Diego
Place note · Outdoors
Cabrillo's tidepools show San Diego at low tide
Cabrillo National Monument's tidepools give San Diego a rocky, close-up look at ocean life, especially during fall and winter low tides.
Place note · History and culture
The Gaslamp Museum gives downtown San Diego an older front door
The Davis-Horton House is the oldest building in downtown San Diego and now anchors the Gaslamp Museum and neighborhood history tours.
Place note · History and culture
Old Town keeps early San Diego in walking distance
Old Town San Diego State Historic Park brings together adobe buildings, living history, museums, shops, food, and the layered beginning of the city.
Place note · History and culture
Spreckels Organ Pavilion gives Balboa Park a free music promise
Spreckels Organ Pavilion began as a 1915 gift to San Diego, with free public concerts still tied to the original promise.
Place note · History and culture
Old Mission Dam gives San Diego a very early water story
Old Mission Dam in Mission Trails Regional Park connects San Diego trails, early mission water work, Kumeyaay labor, and a five-mile aqueduct.
Place note · History and culture
The San Diego Zoo started with a roar in Balboa Park
The San Diego Zoo grew from a Balboa Park animal collection left after the Panama-California Exposition, and the lion Rex became part of the city's origin story.
Place note · History and culture
Chicano Park turns bridge columns into neighborhood memory
Chicano Park in Barrio Logan grew from community action in 1970 and is now known for major murals, cultural memory, and public gathering.
Place note · History and culture
Liberty Station gives San Diego a second life for Navy land
Liberty Station grew from the former Naval Training Center San Diego, where recruits first arrived in 1923, into a public district for arts, food, parks, and history.