Mercer County

Mercer County is a county in New Jersey, United States. The population in Mercer County was 380,688 in 2022. The median age in Mercer County was 38.9 in 2021. The median income in Mercer County was $38,574 in 2021. The unemployment rate in Mercer County was 3.7% in 2023. The percentage of people with obesity in Mercer County was 23.6% in 2021. The percentage of people who binge drink in Mercer County was 15.1% in 2021. The percentage of people who smoke in Mercer County was 13.5% in 2021.