The entire county-level city has an area of 1,032 square kilometres (398 sq mi) and a population of 490,000 (2002). It falls under the jurisdiction of Xiangyang City. The area includes the city of Laohekou proper, which has an area of 27 square kilometres (10 sq mi).
Laohekou has a monsoon-influenced, four season humid subtropical climate (KöppenCfa), with cold, damp (but comparatively dry), winters, and hot, humid summers. The monthly 24-hour average temperature ranges from 2.9 °C (37.2 °F) in January to 27.4 °C (81.3 °F) in July, while the annual mean is 15.87 °C (60.6 °F). A majority of the annual precipitation of 830 mm (33 in) occurs from June to September. With monthly percent possible sunshine ranging from 33% in January to 46% in August, the city receives 1,762 hours of bright sunshine annually; January thru March is the cloudiest period of the year.
Climate data for Laohekou (1991–2020 normals, extremes 1971–2010)
^ ab老河口市历史沿革 [Laohekou City Historical Development] (in Simplified Chinese). XZQH.org. 6 August 2014. Retrieved 3 September 2018. 1996年,老河口市面积1032平方千米,{...}2010年第六次人口普查,老河口市常住总人口其中:471482人,光化街道67317人,酂阳街道97148人,孟楼镇31968人,竹林桥镇35022人,薛集镇42538人,张集镇41215人,仙人渡镇36042人,洪山嘴镇50677人,李楼镇37453人,袁冲乡32102人。