Luoyuan County, a county under the jurisdiction of Fuzhou City, Fujian Province, is located in the northeast coast of Fujian Province, adjacent to Lianjiang County in the south, Fuzhou City and Minhou County in the southwest, Gutian County in the northwest, Ningde City in the north, and Xiapudongchong Peninsula across the sea in the east.

Luoyuan County covers an area of 1187.18 square kilometers, including 1062.2 square kilometers of land area and 124.98 square kilometers of sea area and tidal flat area. The territory is surrounded by mountains on three sides, and the terrain is long strip from east to west. The southeast branch of Jiufeng Mountains extends into the country from the northwest, forming many mountains. The terrain is from west to east, three high and two low, shaped like "W".

In 2015, Luoyuan County governed 6 towns and 5 townships, of which Huokou was a nationality township. According to the data of the seventh population census, as of 0:00 on November 1, 2020, the permanent population of Luoyuan County was 255214.

From January to December 2019, the gross regional product was 30.34 billion yuan, up 8.5%.