In the contemporary, lai is hundred ranked ninety-eighth in the mainland and in Taiwan ranked 15 or 19 famous name, but its population is still not an exact statistics.The causes of this phenomenon is: because a lai demographics are too wide, area is too vast spread out, left a large difficulty to statistics work;Moreover, in the past the national census, attention to more is the overall number of people around the occupational structure and relatively close relations with real life such as statistics, and neglect the surname of usage statistics, so don't know the exact number of lai population.However, in spite of this, some of the original data on it or make use of these statistics for a recount, or within a certain range of the usage of surnames sampling survey, and obtained the quite satisfactory conclusion.

Population sampling survey in recent years, more credible information is some researchers according to the 1982 national population census data of sampling survey.In this sample, they put the country into the northeast, north China, east China, south China, northwest, southwest and so on six big district, and draw the liaoning, Beijing, Shanghai, fujian, guangdong, shanxi, sichuan as the focus of investigation.A. a. selectived examination in 1749 of them, found that there are 364 people surnamed lai, of the total population, and eighty percent in the country with this hundred top 2 eighty-six.This is a very valuable.If we have to calculate the proportion of the population to population to destroy, and assumes that the proportion of people now with this difference, so, in today's China's one billion two hundred million population, population about around 24:27 and 〇万 lai.If coupled with Taiwan, Hong Kong and overseas population, lai lai should be in matters of population one hundred thousand people.

If some more specific said, in the places such as liaoning's surname usage sampling survey, the total survey of liaoning should ErJiu people, including two lai, ErWuLiuWei accounted for by the last name;Investigating the 24948 people in Beijing, there are six people surnamed lai, of surnames surveyed ErErSanWei;Investigation of Shanghai should be reopened people, of which only one lai, of surnames surveyed ErBaLiuWei;Survey in fujian, the 25244 people, of which depends on name of 36 people, in the name of sixty surveyed: survey the 25646 guangdong people, 244 of whom surnamed lai, the surname of the surveyed 25: survey the 23795 people of shaanxi, 14 of whom surnamed lai, ErSiLiuWei accounted for by the last name;Survey the 25239 sichuan people, including sixty-one people surnamed lai, of surnames surveyed seventy-five bits.Can be seen from the survey results, lai people in east China, south China, southwest area is higher, the proportion of people in other areas is relatively lower.

Lai in the distribution so a south north more, less is closely related to their historical origin.Such as lai well-known figure in the history of the more concentrated in the south, the north is less, and even almost none.If lai is Yu all people in the tang dynasty, song dynasty Lai Wenjun is unable, professors lai fu is clean, Lai Liang hence is changting, Lai Mengling is funing, Lai Wenzheng is nanping people;Yuan dynasty Lai Lusun is including people, Lai Liang is tiantai person;Lai Houfu in Ming dynasty is in zengcheng, Lai Xianmin is longyan, GuangChang Lai Ying is, bamboo-shack Lai Zu is, Lai Feng is quanzhou, Lai Ting is in yongding, Lai Long is heyuan, Lai Jiamo is yongfeng, Lai Wanyao is the German people, lai road, south is the yong people, Lai Sui are peaceful people: qing dynasty MingXi Lai Huazhong is, lai wenkwok is should, on which bin's minimalist technique is the kernel and people, Lai Rui is west person, lai Hun born is making-friends, Lai Wenhong is guangxi people;Lai and Peng Hua are modern and contemporary, hui lai heart is three people, Lai Shihuang is shicheng, lai is the cantonese, Lai Chuanzhu is county, Lai Ruqiao is at pingkiang, Lai Reyu is five people, 赖昌祚 is ruijin, lai state is gian, Lai Shaoqi is puning, Lai Yali is neijiang, Lai Qifang is ms wu, Lai Shaoyao is your city person, Lai Chunfeng is ningkang, Lai Zuwu is provincein, huiyang Lai Aiguang is, and so on.From these lai name person's domicile of origin, it can be seen mainly in fujian, wide beam, jiangxi, hunan, sichuan and other provinces, is in keeping with lai man on the distribution of the basic rule of south to north much less.