This study investigated the prevalence of and factors associated with nocturia in Korean men. A total of 92,626 participants aged between 19 and 103 years from the 2011 Korean Community Health Survey (KCHS) were enrolled. Simple and multiple logistic regression analyses with complex sampling investigated participants' personal health and socioeconomic and disease factors. The prevalence of nocturia ≥1 time and ≥2 times/night was 41.8% and 17.6%, respectively, and nocturia increased with age (1.44 [1.39-1.50] for each 10-year increase, P < 0.001). Lower income levels (lowest, 1.27 [1.19-1.36]; low-middle, 1.13 [1.07-1.19]; upper-middle, 1.00 [0.95-1.06], P = 0.022) and higher levels of stress (severe, 1.38 [1.23-1.55]; moderate, 1.23 [1.16-1.31]; some, 1.11 [1.05-1.16]) exhibited dose-dependent relationships with nocturia (≥1 time; P < 0.001). Low education level (1.27 [1.20-1.36]), long sleep duration (1.33 [1.18-1.50]), and type of occupation showed significant associations with nocturia (≥1 time; P < 0.001). Underweight (1.19 [1.05-1.34]), hypertension (1.09 [1.03-1.15]), diabetes mellitus (1.32 [1.23-1.41]), hyperlipidaemia (1.28 [1.20-1.35]), and cerebral stroke (1.63 [1.40-1.89]) were significantly related to nocturia (≥1 time; P < 0.001). Married men were less likely to experience nocturia ≥2 times per night (0.72 [0.64-0.82], P < 0.001).