The city is 11.86 sq mi (30.73 km 2 ) in area . 34°41′24″N 135°11′44″E﻿ / ﻿34.69000°N 135.19556°E are the coordinates of the city. . The city has the postal code 090101 to 090158 . The area of the urban region is Area : 598.75 km2 (231.18 sq mi) . The land area of the city is 314.95 sq mi (815.72 km 2 ) .  The city area code is 041 . This city is named after Harry Culver . The metro region has Population: 3,113,725  population . Iwaki Yumoto Onsen is located in Oyo . The water area of the city is 28.08 km 2  (10.84 sq mi) . Iwaki Yumoto Onsen is at an elevation of 1018 m . The density of  people in  the metro region of Iwaki Yumoto Onsen is 1,352.5/km 2  (3,527/sq mi) . Iwaki Yumoto Onsen is the government of Ministry of Culture . The density of  people in  the urban region of Iwaki Yumoto Onsen is 4,800/km 2  (12,000/sq mi) . 630/sq km  (1,600/sq mi) is the density of inhabitents in Iwaki Yumoto Onsen . The demonym of the city Iwaki Yumoto Onsen is Santiaguinos  (- as )
Iwaki Yumoto Onsen has an area of 30.73 km 2 