Methodological Note (Approximation):
City-level values in this report are estimated by proportionally allocating ZIP‑code–level emergency department (ED) visit rates based on the percentage of residents who live within the city boundaries of each ZIP code. This approach assumes that ED utilization patterns are similar for residents inside and outside the city portion of the ZIP. Because true city-level ED data are not available, these estimates should be interpreted as approximations that reflect relative trends over time rather than precise measurements of city-specific rates. Changes in insurance coverage, access to care, and other socioeconomic factors may influence annual ED utilization and could affect observed trends.
Source of ED visit rates - Washington County