Gu'an County is subordinate to Langfang City, Hebei Province. It is located in the north of North China Plain and the hinterland of Beijing Tianjin Baoding Triangle, with east longitude of 116 ° 17 'and north latitude of 39 ° 19'. It is connected with Yongqing County in the east, Zhuozhou City and Gaobeidian City in Baoding in the west, Bazhou City and Xiong'an New District in the south, Yongding River in the north and Daxing District in Beijing. The county covers an area of 703 square kilometers, governs 9 townships, 1 provincial park, 419 administrative villages, and 650000 mu of arable land.

Gu'an County enjoys a favorable geographical location. In ancient times, it was called "the foot of the emperor", and now it is known as "the pearl of southern Beijing". It is 50 kilometers away from Beijing Tiananmen and 8 kilometers away from Beijing Daxing International Airport. It is the "front line" frontier for Beijing Tianjin Hebei to implement the "one line and two boxes" strategy, and also an important fulcrum for Langfang's urban construction "big three points" cluster. It has been awarded the titles of "Hometown of Hot Springs in China", "Hometown of Flowers and Trees in China", "Hometown of Fishing Tackles in China", "Hometown of Folk Culture and Arts in China", "Hometown of Mineral Water in China", etc. by relevant national departments. In 2014, the China Urban Competitiveness Research Association released the "2014 Ranking List of China's County Growth Competitiveness" on the 18th. Gu'an County, Langfang City, ranked 42nd in the top 50, and was the only county (city) in Hebei that was shortlisted in the top 50. In 2015, Gu'an ranked among the top ten counties with the most innovative economy in China. As the only city in Hebei, it ranked first. In November 2018, it was identified as one of the first innovative counties (cities) by the Ministry of Science and Technology. In December 2018, it was selected as one of the top 100 county-level economic investment potentials in China. On October 8, 2019, it was selected as one of the top 100 counties and cities with investment potential in 2019. In 2019, it ranked 82nd among the top 100 counties and cities in China for green development. Top 100 leisure counties and cities in China in summer in 2020. In May 2020, it was selected into the demonstration list of new urbanization construction in the county seat. In March 2021, it was awarded as an advanced county (city, district) for village clean action in Hebei Province in 2020.

In 2019, the gross domestic product of Gu'an County was 31340730000 yuan.