Mohave County is located in the northwestern corner of the U.S. state of Arizona . As of 2000 its population was 155,032. The largest city is Lake Havasu City . Mohave County contains part of Grand Canyon National Park , Lake Mead National Recreation Area, and all of the Grand Canyon-Parashant National Monument. The Kaibab, Fort Mojave and Hualapai Indian Reservations also lie within the county. The county seat is Kingman.

According to the U.S. Census Bureau, the county has a total area of 34,886 km² (13,470 mi²). 34,477 km² (13,312 mi²) of it is land and 409 km² (158 mi²) of it is water. The total area is 1.17% water. As of the census2 of 2000, there are 155,032 people, 62,809 households, and 43,401 families residing in the county.

There are 80,062 housing units at an average density of 2/km² (6/mi²). The racial makeup of the county is 90.06% White, 0.54% Black or African American, 2.41% Native American, 0.77% Asian, 0.11% Pacific Islander, 4.00% from other races, and 2.13% from two or more races. 11.08% of the population are Hispanic or Latino of any race. The median income for a household in the county is $31,521, and the median income for a family is $36,311.

Neighboring areas are as follows: Washington County , Utah; Kane County, Utah; Coconino County ; Yavapai County ; La Paz County ; San Bernardino County , Calif; Clark County , Nev.; Lincoln County , Nev.