To evaluate the periodontal status of Korean adults, 3,988 adults(20-69 years old) who lived in Kwangju, Chonnam, Taegu, and Kyungbuk districts were periodontally examined by plaque index(PI), calculus index(CI), gingival index(GI), periodontal disease index (PDI), and papillary bleeding index(PBI). The periodontal examination charts were grouped according to age and sex. And subsequently 200 periodontal examination charts in each age group were randomly selected according to sex. The differences of the indices among age groups and those between male and female in each age group were statistically analyzed by Chi-Square test. In PI, CI, GI, PDI, and PBI, there was no statistical significance in the difference between male and female in each age group(p>0.05). In male, PI of 60s age group($1.44{pm}0.68$) was significantly higher than that of any age group(p<0.05), and in female PI of 20s age group($0.86{pm}0.39$) was significantly lower than that of any other age group(p<0.05). CI of 60s age group in both male($1.67{pm}0.70$) and female($1.63{pm}0.91$) was significantly higher than that of any age group(p<0.05). GI of 20s age group in both male($0.85{pm}0.66$) and female($0.67{pm}0.60$) was significantly lower and GI of 60s age group in both male($1.37{pm}0.60$) and female($1.44{pm}0.84$) was higher than that of any age group(p<0.05). PDI in male was the lowest in 20s age group($0.70{pm}0.73$), and was the highest in 60s age group($4.93{pm}1.96$) (p<0.05). In female PDI of 20s age group($0.71{pm}0.74$) was significantly lower than that of any age group(p<0.05). In male PBI of 20s age group($0.38{pm}0.31$) was significantly lower than that of any age group(p<0.001). PBI in female was the lowest in 20s age group($0.35{pm}0.30$) (p<0.001), and was the highest in 60s age group($1.09{pm}0.76$) (p<0.05). The data insist that all the young populations of 20s age group should be interested in routine check for early diagnosis and prevention of periodontal disease, and a special education program of periodontal health care for young generation must be prepared, and the periodic recall check system for periodontal examination of middle age group must be supported by government.