Abstract: County town examination has become an important means to address the pressing concerns and daily difficulties of the populace and to advance urbanization with the county as a key carrier. This paper constructs a ‘dual-perspective framework driven by both objective spatial analysis and subjective perception diagnosis', integrating spatial analysis methods such as kernel density analysis and cold/hot spot analysis, the Geo-graphically Weighted Regression (GWR) model, and the Ordered Probit model to investigate the mechanism through which the configuration of public service facilities in counties influences residents' well-being. The study finds that the impact of different types of facilities on well-being shows significant spatial heterogeneity. Regarding residents' subjective perceptions, healthcare resources and the preservation of traditional urban features emerge as key factors influencing well-being. This research provides theoretical support and practical pathways for transitioning county public services from merely ensuring ‘availability' to enhancing ‘quality'.