Source identity and administrative path
The source row behind Tehran is GeoNames ID 112931. Its recorded administrative path is Tehran → Iran, and GeoNames classifies the place as a capital of a political entity. Tehran 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 2024-03-26; 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, Tehran ranks 42 by recorded population. Inside the 15 selected Iran entries it ranks 1; inside the 243 entries in its broad region it ranks 7. Its 7,153,309 population value is 8.50 times the 841,145 median for the country cohort and 7.93 times the 902,588 regional median. Tehran falls inside the leading tenth of this atlas's Iran population cohort. Tehran'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
Tehran's three nearest other atlas coordinates are Karaj at 41.73 km with 1,448,075 recorded people; Qom at 127.273 km with 900,000 recorded people; Arak at 237.345 km with 503,647 recorded people. The closest-to-farthest distance spread is 195.615 km. Compared with Karaj, Tehran's recorded population is 4.94 times as large. Against Tehran, Karaj follows Alborz Province → Iran in the source. Its point has higher latitude and lower longitude; it belongs to the same selected Iran cohort, uses the shared Asia/Tehran identifier, and carries first-order administrative seat rather than capital of a political entity. Its recorded population is below Tehran's. Against Tehran, Qom follows Qom Province → Iran in the source. Its point has lower latitude and lower longitude; it belongs to the same selected Iran cohort, uses the shared Asia/Tehran identifier, and carries first-order administrative seat rather than capital of a political entity. Its recorded population is below Tehran's. Against Tehran, Arak follows Markazi → Iran in the source. Its point has lower latitude and lower longitude; it belongs to the same selected Iran cohort, uses the shared Asia/Tehran identifier, and carries first-order administrative seat rather than capital of a political entity. Its recorded population is below Tehran's. Its nearest-neighbor distance ranks 373 of 1,206 from shortest to longest in the same snapshot. Tehran'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 112931, the coordinate pair 35.6944 / 51.4215, country rank 1 of 15, and neighbor GeoNames 128747 at 41.73 km bind Tehran 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
Tehran's reference point is 35.6944° north and 51.4215° east. The IANA identifier Asia/Tehran is shared by 15 city rows in this catalog, while the GeoNames class PPLC is shared by 129 rows. Tehran's row carries a first-order administrative label but no second-order label. Tehran's point falls in the middle-latitude coordinate band used by this atlas's row checks. Tehran's time-zone field defines the narrower catalog cohort; its place class is shared more broadly. GeoNames supplies no elevation for Tehran, 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.
- Record keys
- Tehran · GeoNames 112931 · Q3616
- Name scope
- Tehran · 1 atlas row share this source label · qualifier not required
- Administrative chain
- Tehran · Iran
- Coordinate signature
- 35.6944° N · 51.4215° E
- Population snapshot
- 7,153,309 · atlas rank 42 of 1,206
- Country comparison
- Iran rank 1 of 15 · median 841,145 · ratio 8.50×
- Regional comparison
- Africa and the Middle East rank 7 of 243 · median 902,588 · ratio 7.93×
- Time-zone cohort
- Asia/Tehran · 15 of 1,206 atlas rows
- Place-class cohort
- PPLC capital of a political entity · 129 of 1,206 rows
- Elevation field
- Tehran · missing in GeoNames
- Nearest reference
- Karaj · 41.73 km · population 1,448,075 · atlas rank 338
- Second reference
- Qom · 127.273 km · population 900,000 · atlas rank 618
- Third reference
- Arak · 237.345 km · population 503,647 · atlas rank 1,139
- Neighbour geometry
- Tehran · nearest-distance rank 373 of 1,206 · three-reference spread 195.615 km
- Source dates
- Tehran row updated 2024-03-26 · atlas dataset checked 2026-08-04