1,206-CITY ATLASSOURCE-BACKED CITY REFERENCE
United States
Compare this sourced profile of San Diego, United States before planning. Stable fields identify the place; confirm current transport, access and opening details with official sources.
01What the data says — and does not say
This page separates the checked GeoNames row for San Diego—1,404,452, America/Los_Angeles, and source coordinates—from live travel claims. Those fields identify and compare the record; they do not prove current transport, accessibility, census totals, or a City Atlas Club visit.
Wikidata's localized description: seat of San Diego County, California, United States; second-largest city in California.
02This city's dataset fingerprint
The source row behind San Diego is GeoNames ID 5391811. Its recorded administrative path is San Diego County → California → United States, and GeoNames classifies the place as a second-order administrative seat. San Diego occurs once as a primary city label in this atlas sample; the numeric ID remains the durable source key if names change. The city row itself was updated 2025-06-25; that date belongs to the source record, not to every transport or visitor detail in the real destination.
Within the fixed 1,206-record atlas, San Diego ranks 355 by recorded population. Inside the 43 selected United States entries it ranks 11; inside the 198 entries in its broad region it ranks 50. Its 1,404,452 population value is 1.80 times the 780,995 median for the country cohort and 1.72 times the 816,326 regional median. San Diego falls between the leading tenth and quarter of this atlas's United States population cohort. San Diego's recorded value is above the country-cohort median but remains below twice that benchmark. These comparisons describe this selected dataset only; they are not current census rankings or official urban-area boundaries.
San Diego's three nearest other atlas coordinates are Tijuana at 28.079 km with 1,922,523 recorded people; Mexicali at 160.379 km with 1,032,686 recorded people; Los Angeles at 179.223 km with 3,820,914 recorded people. The closest-to-farthest distance spread is 151.144 km. Compared with Tijuana, San Diego's recorded population is 0.73 times as large. Against San Diego, Tijuana follows Tijuana → Baja California → Mexico in the source. Its point has lower latitude and higher longitude; it belongs to the selected Mexico cohort rather than United States, uses America/Tijuana instead of America/Los_Angeles, and carries the same second-order administrative seat class. Its recorded population is above San Diego's. Against San Diego, Mexicali follows Mexicali → Baja California → Mexico in the source. Its point has lower latitude and higher longitude; it belongs to the selected Mexico cohort rather than United States, uses America/Tijuana instead of America/Los_Angeles, and carries first-order administrative seat rather than second-order administrative seat. Its recorded population is below San Diego's. Against San Diego, Los Angeles follows Los Angeles County → California → United States in the source. Its point has higher latitude and lower longitude; it belongs to the same selected United States cohort, uses the shared America/Los_Angeles identifier, and carries the same second-order administrative seat class. Its recorded population is above San Diego's. Its nearest-neighbor distance ranks 310 of 1,206 from shortest to longest in the same snapshot. San Diego's nearest-coordinate gap sits in the second quarter of atlas distances. This pattern can reveal whether other catalog references are geographically close, but it cannot establish whether a border crossing is possible or practical, or whether rail, road, fare, or journey-time connections exist. Read as one record signature, GeoNames 5391811, the coordinate pair 32.7157 / 117.1647, country rank 11 of 43, and neighbor GeoNames 3981609 at 28.079 km bind San Diego to a reproducible comparison. That combined key distinguishes the row; it is not a recommendation or evidence of a physical connection.
San Diego's reference point is 32.7157° north and 117.1647° west. The IANA identifier America/Los_Angeles is shared by 9 city rows in this catalog, while the GeoNames class PPLA2 is shared by 341 rows. San Diego's row carries both second- and first-order administrative labels. San Diego's point falls in the middle-latitude coordinate band used by this atlas's row checks. San Diego's time-zone field defines the narrower catalog cohort; its place class is shared more broadly. GeoNames records San Diego at 20 metres above sea level, a single reference value rather than a description of slopes across the city. Together these fields form a reproducible identity check for this page, not a claim about walkability, climate or accessibility.
03Nearby atlas references
San Diego's closest other entries in this atlas are Tijuana (28.079 km), Mexicali (160.379 km), Los Angeles (179.223 km).
04Verify before you book
Before visiting San Diego, confirm changing decisions with current first-party sources:
Read how City Atlas Club verifies changing travel facts →05Sources and freshness
GeoNames updated the row 2025-06-25; the atlas checked the dataset 2026-08-04. Available Wikidata fields were verified in the same run.
GeoNames data: CC BY 4.0. Wikidata labels and descriptions: CC0 1.0.