Арнольд, Мэриленд штатының географиялық және демографиялық шолуы

Arnold, a census designated place (CDP) in Anne Arundel County, Maryland, United States, located just outside of the state's capital, Annapolis. It is located 18.78 miles south of Baltimore, and 29.97 miles east of Washington, D. C. The population was 23,106 at the 2010 census. Neighborhoods straddle College Parkway and Maryland Route 2 (Ritchie Highway). Arnold is located on the scenic Broadneck Peninsula. The ZIP code is 21012. It is bordered by Severna Park to the northwest, Cape Saint Claire to the southeast, Annapolis to the southwest, and Lake Shore (a CDP within Pasadena) to the northeast.

Native Americans are known to have resided in the region in pre Columbian times based on artifacts found in the Ulmstead Point area dating back to the Archaic period (5000–1500 BC). Later tribes that have been in the area include the Algonquin tribes, among others. However, when Captain John Smith arrived in the area in 1608, he reported no Natives. The early settlement of Arnold, an area between the Magothy and Severn rivers, began with the farm of John Arnold. He was a veteran of the War of 1812, who acquired on the north side of the Severn River. One of his sons, Thomas Arnold, inherited the land, later working as the local station master for the Baltimore and Annapolis Short Line Railroad. Residents know the area to have been home to a racetrack in the present day Revell Downs planned community and even a rollercoaster and boardwalk in Mago Vista Beach.

Arnold is located at (39.047263, −76.496552). It is 5 mile (8 km) north of Annapolis, the state capital, and 24 mile (39 km) south of downtown Baltimore. According to the United States Census Bureau, the CDP has a total area of , of which is land and , or 20.18%, is water, consisting of the tidal Severn (to the southwest) and Magothy (to the northeast) rivers.

As of the census of 2010, there were 23,106 people, 8,373 households, and 6,396 families residing in the CDP. The population density was There were 8,623 housing units at an average density of The racial makeup of the CDP was 88.65% White, 5.23% African American, 0.23% Native American, 2.41% Asian, 0.03% Pacific Islander, 1.16% from other races, and 2.28% from two or more races. Hispanic or Latino of any race were 3.97% of the population. There were 8,373 households, of which 40.2% had children under the age of 18 living with them; 63.8% were married couples living together, 9.5% had a female householder with no husband present, and 23.6% were non families. 4.6% had someone living alone who was 65 years of age or older. The average household size was 2.76 and the average family size was 3.15. In the CDP, the population was spread out, with 25.31% under the age of 18, 6.1% from 18 to 24, 30.6% from 25 to 44, 26.9% from 45 to 64, and 8.6% who were 65 years of age or older. The median age was 37 years. For every 100 females, there were 93.9 males. For every 100 females age 18 and over, there were 90.1 males. According to a 2019 estimate, the median household income was $126,310.

A season 5 episode of the Discovery Channel series A Haunting, titled "Angels and Demons," takes place in Arnold in 2010–2011.