Haikou

Source identity and administrative path

The source row behind Haikou is GeoNames ID 1809078. Its recorded administrative path is Haikou Shi → Hainan → China, and GeoNames classifies the place as a first-order administrative seat.

Haikou 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 2026-04-13; that date belongs to the source record, not to every transport or visitor detail in the real destination.

Population position inside fixed cohorts

Within the fixed 1,206-record atlas, Haikou ranks 125 by recorded population. Inside the 296 selected China entries it ranks 47; inside the 632 entries in its broad region it ranks 82.

Its 2,873,358 population value is 2.47 times the 1,165,375 median for the country cohort and 2.85 times the 1,008,426 regional median. Haikou falls between the leading tenth and quarter of this atlas's China population cohort.

Haikou's recorded value reaches at least twice the country-cohort median in this snapshot. These comparisons describe this selected dataset only; they are not current census rankings or official urban-area boundaries.

Nearest-reference pattern

Haikou's three nearest other atlas coordinates are Wenchang at 71.826 km with 560,894 recorded people; Qionghai at 88.892 km with 528,238 recorded people; Zhanjiang at 133.469 km with 1,400,709 recorded people. The closest-to-farthest distance spread is 61.643 km. Compared with Wenchang, Haikou's recorded population is 5.12 times as large. Against Haikou, Wenchang follows Wenchang Shi → Hainan → 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 third-order administrative seat rather than first-order administrative seat.

Its recorded population is below Haikou's. Against Haikou, Qionghai follows Qionghai County → Hainan → 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 second-order administrative seat rather than first-order administrative seat. Its recorded population is below Haikou's. Against Haikou, Zhanjiang follows Zhanjiang Shi → Guangdong → 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 second-order administrative seat rather than first-order administrative seat. Its recorded population is below Haikou's. Its nearest-neighbor distance ranks 562 of 1,206 from shortest to longest in the same snapshot. Haikou'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 1809078, the coordinate pair 20.0342 / 110.3465, country rank 47 of 296, and neighbor GeoNames 1791544 at 71.826 km bind Haikou to a reproducible comparison. That combined key distinguishes the row; it is not a recommendation or evidence of a physical connection.

Coordinate, time-zone and class cohorts

Haikou's reference point is 20.0342° north and 110.3465° east. The IANA identifier Asia/Shanghai is shared by 291 city rows in this catalog, while the GeoNames class PPLA is shared by 429 rows. Haikou's row carries both second- and first-order administrative labels.

Haikou's point falls in the lower-latitude coordinate band used by this atlas's row checks. Haikou's time-zone field defines the narrower catalog cohort; its place class is shared more broadly. GeoNames supplies no elevation for Haikou, 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.