Rural-urban disparities in mortality in younger age groups cannot be explained by ethnicity or socioeconomic deprivation, according to a New Zealand study using 2018 Census and national mortality data. For Māori and non-Māori aged 45-59 years, higher rates of mortality for rural compared with urban residents were attenuated after adjustment for socioeconomic deprivation. However, in those aged <45 years, disparities in mortality remained – the adjusted ratio for amendable mortality was 1.26 (95% confidence interval [CI] 1.131.41) in Māori and 1.46 (95% CI 1.33-1.59) in non-Māori.