Source identity and administrative path
The source row behind Onitsha is GeoNames ID 2326016. Its recorded administrative path is Onitsha North → Anambra → Nigeria, and GeoNames classifies the place as a second-order administrative seat. Onitsha 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 2022-09-23; 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, Onitsha ranks 298 by recorded population. Inside the 30 selected Nigeria entries it ranks 8; inside the 243 entries in its broad region it ranks 64. Its 1,553,000 population value is 1.67 times the 930,000 median for the country cohort and 1.72 times the 902,588 regional median. Onitsha falls between the leading tenth and quarter of this atlas's Nigeria population cohort. Onitsha'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.
Nearest-reference pattern
Onitsha's three nearest other atlas coordinates are Owerri at 78.973 km with 545,000 recorded people; Enugu at 85.226 km with 950,000 recorded people; Benin City at 129.914 km with 1,782,000 recorded people. The closest-to-farthest distance spread is 50.941 km. Compared with Owerri, Onitsha's recorded population is 2.85 times as large. Against Onitsha, Owerri follows Owerri Municipal → Imo State → Nigeria in the source. Its point has lower latitude and higher longitude; it belongs to the same selected Nigeria cohort, uses the shared Africa/Lagos identifier, and carries first-order administrative seat rather than second-order administrative seat. Its recorded population is below Onitsha's. Against Onitsha, Enugu follows Enugu North → Enugu State → Nigeria in the source. Its point has higher latitude and higher longitude; it belongs to the same selected Nigeria cohort, uses the shared Africa/Lagos identifier, and carries first-order administrative seat rather than second-order administrative seat. Its recorded population is below Onitsha's. Against Onitsha, Benin City follows Oredo → Edo State → Nigeria in the source. Its point has higher latitude and lower longitude; it belongs to the same selected Nigeria cohort, uses the shared Africa/Lagos identifier, and carries first-order administrative seat rather than second-order administrative seat. Its recorded population is above Onitsha's. Its nearest-neighbor distance ranks 610 of 1,206 from shortest to longest in the same snapshot. Onitsha'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 2326016, the coordinate pair 6.1498 / 6.7857, country rank 8 of 30, and neighbor GeoNames 2325330 at 78.973 km bind Onitsha 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
Onitsha's reference point is 6.1498° north and 6.7857° east. The IANA identifier Africa/Lagos is shared by 30 city rows in this catalog, while the GeoNames class PPLA2 is shared by 341 rows. Onitsha's row carries both second- and first-order administrative labels. Onitsha's point falls in the near-equatorial coordinate band used by this atlas's row checks. Onitsha's time-zone field defines the narrower catalog cohort; its place class is shared more broadly. GeoNames supplies no elevation for Onitsha, 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
- Onitsha · GeoNames 2326016 · Q852238
- Name scope
- Onitsha · 1 atlas row share this source label · qualifier not required
- Administrative chain
- Onitsha North · Anambra · Nigeria
- Coordinate signature
- 6.1498° N · 6.7857° E
- Population snapshot
- 1,553,000 · atlas rank 298 of 1,206
- Country comparison
- Nigeria rank 8 of 30 · median 930,000 · ratio 1.67×
- Regional comparison
- Africa and the Middle East rank 64 of 243 · median 902,588 · ratio 1.72×
- Time-zone cohort
- Africa/Lagos · 30 of 1,206 atlas rows
- Place-class cohort
- PPLA2 second-order administrative seat · 341 of 1,206 rows
- Elevation field
- Onitsha · missing in GeoNames
- Nearest reference
- Owerri · 78.973 km · population 545,000 · atlas rank 1,026
- Second reference
- Enugu · 85.226 km · population 950,000 · atlas rank 584
- Third reference
- Benin City · 129.914 km · population 1,782,000 · atlas rank 244
- Neighbour geometry
- Onitsha · nearest-distance rank 610 of 1,206 · three-reference spread 50.941 km
- Source dates
- Onitsha row updated 2022-09-23 · atlas dataset checked 2026-08-04