Porto Velho

Source identity and administrative path

The source row behind Porto Velho is GeoNames ID 3662762. Its recorded administrative path is Porto Velho → Rondonia → Brazil, and GeoNames classifies the place as a first-order administrative seat.

Porto Velho 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, Porto Velho ranks 1,019 by recorded population. Inside the 48 selected Brazil entries it ranks 37; inside the 198 entries in its broad region it ranks 165.

Its 548,952 population value is 0.72 times the 758,563 median for the country cohort and 0.67 times the 816,326 regional median. Porto Velho sits in the lower half of this atlas's selected Brazil entries.

Porto Velho'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.

Nearest-reference pattern

Porto Velho's three nearest other atlas coordinates are Manaus at 761.569 km with 2,219,580 recorded people; Cochabamba at 989.094 km with 841,276 recorded people; Santa Cruz de la Sierra at 1,006.498 km with 1,831,434 recorded people. The closest-to-farthest distance spread is 244.929 km. Compared with Manaus, Porto Velho's recorded population is 0.25 times as large. Against Porto Velho, Manaus follows Manaus → Amazonas → Brazil in the source. Its point has higher latitude and higher longitude; it belongs to the same selected Brazil cohort, uses America/Manaus instead of America/Porto_Velho, and carries the same first-order administrative seat class.

Its recorded population is above Porto Velho's. Against Porto Velho, Cochabamba follows Cochabamba → Bolivia in the source. Its point has lower latitude and lower longitude; it belongs to the selected Bolivia cohort rather than Brazil, uses America/La_Paz instead of America/Porto_Velho, and carries the same first-order administrative seat class. Its recorded population is above Porto Velho's. Against Porto Velho, Santa Cruz de la Sierra follows Santa Cruz Department → Bolivia in the source.

Its point has lower latitude and higher longitude; it belongs to the selected Bolivia cohort rather than Brazil, uses America/La_Paz instead of America/Porto_Velho, and carries the same first-order administrative seat class. Its recorded population is above Porto Velho's. Its nearest-neighbor distance ranks 1,197 of 1,206 from shortest to longest in the same snapshot. Porto Velho'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 3662762, the coordinate pair 8.7619 / 63.9039, country rank 37 of 48, and neighbor GeoNames 3663517 at 761.569 km bind Porto Velho 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

Porto Velho's reference point is 8.7619° south and 63.9039° west. The IANA identifier America/Porto_Velho is shared by 1 city rows in this catalog, while the GeoNames class PPLA is shared by 429 rows. Porto Velho's row carries both second- and first-order administrative labels.

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