1,206-CITY ATLASSOURCE-BACKED CITY REFERENCE
China
Compare this sourced profile of Sanmenxia, China 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 Sanmenxia—669,307, Asia/Shanghai, 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: prefecture-level city in Henan, China.
02This city's dataset fingerprint
The source row behind Sanmenxia is GeoNames ID 1796669. Its recorded administrative path is Henan → China, and GeoNames classifies the place as a second-order administrative seat. Sanmenxia 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 2025-01-10; 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, Sanmenxia ranks 824 by recorded population. Inside the 296 selected China entries it ranks 239; inside the 632 entries in its broad region it ranks 461. Its 669,307 population value is 0.57 times the 1,165,375 median for the country cohort and 0.66 times the 1,008,426 regional median. Sanmenxia sits in the lower half of this atlas's selected China entries. Sanmenxia's recorded value is materially below the country-cohort median used here. These comparisons describe this selected dataset only; they are not current census rankings or official urban-area boundaries.
Sanmenxia's three nearest other atlas coordinates are Yuncheng at 32.535 km with 680,036 recorded people; Changzhi (Yuncheng Shi) at 68.826 km with 699,514 recorded people; Luoyang at 114.309 km with 1,390,581 recorded people. The closest-to-farthest distance spread is 81.774 km. Compared with Yuncheng, Sanmenxia's recorded population is 0.98 times as large. Against Sanmenxia, Yuncheng follows Yuncheng Shi → Shanxi → China in the source. Its point has higher latitude and lower longitude; it belongs to the same selected China cohort, uses the shared Asia/Shanghai identifier, and carries the same second-order administrative seat class. Its recorded population is above Sanmenxia's. Against Sanmenxia, Changzhi (Yuncheng Shi) follows Yuncheng Shi → Shanxi → China in the source. Its point has higher latitude and higher longitude; it belongs to the same selected China cohort, uses the shared Asia/Shanghai identifier, and carries populated place rather than second-order administrative seat. Its recorded population is above Sanmenxia's. Against Sanmenxia, Luoyang follows Luoyang Shi → Henan → China in the source. Its point has lower latitude and higher longitude; it belongs to the same selected China cohort, uses the shared Asia/Shanghai identifier, and carries the same second-order administrative seat class. Its recorded population is above Sanmenxia's. Its nearest-neighbor distance ranks 333 of 1,206 from shortest to longest in the same snapshot. Sanmenxia'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 1796669, the coordinate pair 34.7808 / 111.1929, country rank 239 of 296, and neighbor GeoNames 1785738 at 32.535 km bind Sanmenxia to a reproducible comparison. That combined key distinguishes the row; it is not a recommendation or evidence of a physical connection.
Sanmenxia's reference point is 34.7808° north and 111.1929° east. The IANA identifier Asia/Shanghai is shared by 291 city rows in this catalog, while the GeoNames class PPLA2 is shared by 341 rows. Sanmenxia's row carries a first-order administrative label but no second-order label. Sanmenxia's point falls in the middle-latitude coordinate band used by this atlas's row checks. Sanmenxia's time-zone field defines the narrower catalog cohort; its place class is shared more broadly. GeoNames supplies no elevation for Sanmenxia, 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
Sanmenxia's closest other entries in this atlas are Yuncheng (32.535 km), Changzhi (Yuncheng Shi) (68.826 km), Luoyang (114.309 km).
04Verify before you book
Before visiting Sanmenxia, confirm changing decisions with current first-party sources:
Read how City Atlas Club verifies changing travel facts →05Sources and freshness
GeoNames updated the row 2025-01-10; 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.