|Nickname(s): Round Grove|
|Motto: "Living the Grand Life!"|
Location of Grove, Oklahoma
|o Total||9.3 sq mi (24.0 km2)|
|o Land||9.2 sq mi (23.8 km2)|
|o Water||0.08 sq mi (0.2 km2)|
|Elevation||774 ft (236 m)|
|o Density||721/sq mi (278.3/km2)|
|Time zone||Central (CST) (UTC-6)|
|o Summer (DST)||CDT (UTC-5)|
|GNIS feature ID||1093427|
Prior to Oklahoma statehood, Grove was part of the Delaware District of the Cherokee Nation in Indian Territory. It was named for a grove of trees where it was sited. A post office, named "Brennen", was located in the limits of present-day Grove in 1888, but the city was not incorporated until the 1890s,[a]Rose Stauber, "Grove", Encyclopedia of Oklahoma History and Culture, making it the only incorporated town in Delaware County when Oklahoma became a state.
The city underwent a $3.7 million park project to attract fishing events to Grand Lake, most recently attracting the 2013 and 2016 Bassmaster Classic. Grove is also home to the Grand Lake Casino, which was opened in 1988.
Grove is located in northern Delaware County at  on the east side of the Grand Lake o' the Cherokees. U.S. Route 59 passes through the city, leading north 15 miles (24 km) to Interstate 44 near Afton and south 12 miles (19 km) to Jay, the Delaware County seat. Oklahoma State Highways 10 and 25 lead east out of town.(36.588611, -94.783110),
According to the United States Census Bureau, the city has a total area of 9.3 square miles (24.0 km2), of which 9.2 square miles (23.8 km2) is land and 0.1 square miles (0.2 km2), or 0.69%, is water.
As of the census of 2000, there were 5,131 people, 2,286 households, and 1,490 families residing in the city. The population density was 569.2 people per square mile (219.9/km²). There were 2,807 housing units at an average density of 311.4 per square mile (120.3/km²). The racial makeup of the city was 82.60% White, 0.08% African American, 10.19% Native American, 0.53% Asian, 0.04% Pacific Islander, 0.64% from other races, and 5.92% from two or more races. Hispanic or Latino of any race were 1.72% of the population.
There were 2,286 households out of which 22.4% had children under the age of 18 living with them, 54.2% were married couples living together, 9.2% had a female householder with no husband present, and 34.8% were non-families. 31.6% of all households were made up of individuals and 17.8% had someone living alone who was 65 years of age or older. The average household size was 2.15 and the average family size was 2.68.
In the city, the population was spread out with 19.9% under the age of 18, 5.7% from 18 to 24, 19.0% from 25 to 44, 26.2% from 45 to 64, and 29.2% who were 65 years of age or older. The median age was 50 years. For every 100 females there were 80.6 males. For every 100 females age 18 and over, there were 76.0 males.
The median income for a household in the city was $28,464, and the median income for a family was $38,347. Males had a median income of $31,908 versus $19,106 for females. The per capita income for the city was $18,351. About 9.3% of families and 14.4% of the population were below the poverty line, including 25.0% of those under age 18 and 8.4% of those age 65 or over.