There are no specific figures, only rough estimates.
According to the Sixth National Census in 2010, there are 1339,724,852 people in the country (excluding Hong Kong, Macao and Taiwan) estimated to be 1.34 billion, with a population undercount rate of 0.12.
The surname Zhang accounts for about 7.07% of the total population in the country, so it can be estimated that the total population of the surname Zhang is about 95 million. Because it is an estimate, we assume that all people with the name Zhang Qiang are male. The male to female ratio of the total population is 105.20 to 100, of which the male population is 686,852,572, accounting for 51.27%; the female population is 652,872,280, accounting for 48.73%. . Then there are approximately 49 million men with the surname Zhang. Because naming is generally related to the education level of the parents, with the promotion of basic education, the younger the number of people with this name should be, the fewer people will be given this name. So this is related to the national age distribution and education ratio.
Among the population of the 31 provinces, autonomous regions, municipalities directly under the Central Government and active military personnel in mainland China, the number of people with university education (referring to junior college or above) is 119,636,790; the number of people with high school education (including technical secondary school) is 187,985,979 people; the population with junior high school education is 519,656,445 people; the population with primary school education is 358,764,003 people (people with various education levels above include graduates, undergraduates and current students of various schools).
Among the population of the 31 provinces, autonomous regions, municipalities directly under the Central Government and active military personnel in mainland China, the population aged 0-14 is 222,459,737, accounting for 16.60%; the population aged 15-59 is 939,616,410, accounting for 70.14%; the population aged 60 and above The population is 177,648,705, accounting for 13.26, of which the population aged 65 and above is 118,831,709, accounting for 8.87. Compared with the fifth national census in 2000, the proportion of the population aged 0-14 dropped by 6.29 percentage points, the proportion of the population aged 15-59 increased by 3.36 percentage points, the proportion of the population aged 60 and above increased by 2.93 percentage points, and the proportion of the population aged 65 The proportion of the population above increased by 1.91 percentage points.
So there are about 39 million male people of the right age who may be given this name, because it is a commonly used name (such as Qiang, Wei, Jie, Yong, Lei, Tao, Chao, Gang, etc.) Combined with the survey among netizens (relevant Chongming.com), the proportion is more than 1 point per thousand. The estimate and error of Zhonghe in each link ranges from about 200,000 to 300,000 people.
This is purely a personal estimate without any solid basis. I do not assume any responsibility related to this, thank you.