1,206-CITY ATLASSOURCE-BACKED CITY REFERENCE
Mexico
Compare this sourced profile of Hermosillo, Mexico 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 Hermosillo—812,229, America/Hermosillo, 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: city in Mexico, Sonora state capital.
02This city's dataset fingerprint
The source row behind Hermosillo is GeoNames ID 4004898. Its recorded administrative path is Hermosillo → Sonora → Mexico, and GeoNames classifies the place as a first-order administrative seat. Hermosillo 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 2026-04-14; 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, Hermosillo ranks 686 by recorded population. Inside the 39 selected Mexico entries it ranks 19; inside the 198 entries in its broad region it ranks 101. Its 812,229 population value is 1.00 times the 808,416 median for the country cohort and 0.99 times the 816,326 regional median. Hermosillo sits in the second quarter of this atlas's Mexico population cohort. Hermosillo's recorded value stays within one quarter of the country-cohort median used here. These comparisons describe this selected dataset only; they are not current census rankings or official urban-area boundaries.
Hermosillo's three nearest other atlas coordinates are Tucson at 348.395 km with 542,629 recorded people; Chihuahua City at 477.655 km with 925,762 recorded people; Phoenix at 496.05 km with 1,650,070 recorded people. The closest-to-farthest distance spread is 147.655 km. Compared with Tucson, Hermosillo's recorded population is 1.50 times as large. Against Hermosillo, Tucson follows Pima County → Arizona → United States in the source. Its point has higher latitude and higher longitude; it belongs to the selected United States cohort rather than Mexico, uses America/Phoenix instead of America/Hermosillo, and carries second-order administrative seat rather than first-order administrative seat. Its recorded population is below Hermosillo's. Against Hermosillo, Chihuahua City follows Chihuahua → Mexico in the source. Its point has lower latitude and higher longitude; it belongs to the same selected Mexico cohort, uses America/Chihuahua instead of America/Hermosillo, and carries the same first-order administrative seat class. Its recorded population is above Hermosillo's. Against Hermosillo, Phoenix follows Maricopa County → Arizona → United States in the source. Its point has higher latitude and lower longitude; it belongs to the selected United States cohort rather than Mexico, uses America/Phoenix instead of America/Hermosillo, and carries the same first-order administrative seat class. Its recorded population is above Hermosillo's. Its nearest-neighbor distance ranks 1,143 of 1,206 from shortest to longest in the same snapshot. Hermosillo's nearest-coordinate gap belongs to the wider half 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 4004898, the coordinate pair 29.0887 / 110.9668, country rank 19 of 39, and neighbor GeoNames 5318313 at 348.395 km bind Hermosillo to a reproducible comparison. That combined key distinguishes the row; it is not a recommendation or evidence of a physical connection.
Hermosillo's reference point is 29.0887° north and 110.9668° west. The IANA identifier America/Hermosillo is shared by 1 city rows in this catalog, while the GeoNames class PPLA is shared by 429 rows. Hermosillo's row carries both second- and first-order administrative labels. Hermosillo's point falls in the lower-latitude coordinate band used by this atlas's row checks. Hermosillo's time-zone field defines the narrower catalog cohort; its place class is shared more broadly. GeoNames supplies no elevation for Hermosillo, so the profile preserves that missing value instead of guessing terrain. Together these fields form a reproducible identity check for this page, not a claim about walkability, climate or accessibility.
03Nearby atlas references
Hermosillo's closest other entries in this atlas are Tucson (348.395 km), Chihuahua City (477.655 km), Phoenix (496.05 km).
04Verify before you book
Before visiting Hermosillo, confirm changing decisions with current first-party sources:
Read how City Atlas Club verifies changing travel facts →05Sources and freshness
GeoNames updated the row 2026-04-14; 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.