AVERAGE PENIS SIZES ACCORDING TO RACE researchermeasured figures not self reported
African [Black] 5.2 inches, Nigeria; Can physique and gluteal size predict penile length in adult Nigerian men? [2006]: https://scihub.se/https://www.ajol.info//wajm/article/view/28282 
  Caucasian [exclusively or mostly] 3.7 inches, Canada; The relationships among height, penile length, and foot size [1993]: https://scihub.se/https://journals.sagepub.com/doi/abs/10.1177/107906329300600305  4.9 inches, USA; The effect of prepubertal androgen exposure on adult penile length [1996]: https://scihub.se/https://www.sciencedirect.com/science/article/pii/S0022534701658142  4.9 inches, Italy; Penile length and circumference: a study on 3,300 young Italian males [2001]: https://scihub.se/https://www.karger.com/Article/Abstract/52434  5 inches, USA; Penile length in the flaccid and erect states: Guidelines for penile augmentation [1996]: https://www.sciencedirect.com/science/article/pii/S0022534701656829 https://scihub.se/https://onlinelibrary.wiley.com/doi/abs/10.1046/j.1464410X.2002.02974.x 5.1 inches, UK; Can shoe size predict penile length? [2002]: https://scihub.se/https://onlinelibrary.wiley.com/doi/abs/10.1046/j.1464410X.2002.02974.x 5.2 inches, USA; When size matters: A clinical review of pathological micropenis [2010]: https://scihub.se/https://www.sciencedirect.com/science/article/abs/pii/S0891524509001400 5.6 inches, UK; Establishing a reference range for penile length in Caucasian British men: A prospective study of 609 men [2011]: https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1464410X.2011.10338.x  5.7 inches, Germany; Does penile size in younger men cause problems in condom use? A prospective measurement of penile dimensions in 111 young and 32 older men [2001]: https://scihub.se/https://www.sciencedirect.com/science/article/pii/S0090429500009250  http://www.asiaandro.com/archive/1008682X/5/185.htm
East Asian 3.8 inches, South Korea; Studies on selfesteem of penile size in young Korean military men [2003]: http://www.asiaandro.com/archive/1008682X/5/185.htm 5.1 inches, China; A comprehensive, prospective study of penile dimensions in Chinese men of multiple ethnicities [2014]: https://www.nature.com/articles/ijir20149     5.3 inches, South Korea;The Relationship between Height and Bodyweight and Penile size in University students [1998]; https://www.komci.org/GSResult.php?RID=1020KJU%2F1998.39.11.1061&DT=6    5.3 inches, China; Unknown title [1993]: https://www.scribd.com/document/103024071/ChineseStudy1993   5.5 inches, China; Unknown title [1990]: https://www.scribd.com/doc/103023459/ChineseStudy1990 
South Asian/Middle Eastern  4.5 inches, Iran; Penile size and somatometric parameters among Iranian normal adult men [2007]: https://www.nature.com/articles/3901532  4.9 inches, Iraq; Reference range of flaccid and stretched penile lengths of adult males in Baghdad: A crosssectional study [2017]: https://www.tandfonline.com/doi/pdf/10.1016/j.aju.2017.01.001?needAccess=true  5.1 inches, India; Penile length and circumference: an Indian study [2007]: https://www.nature.com/articles/3901569?referral=true    5.3 inches, Jordan; Penile measurements in normal adult Jordanians and in patients with erectile dysfunction [2005]: https://www.nature.com/articles/3901272  5.3 inches, Israel; Predicting penile size during erection [2000]: https://www.nature.com/articles/3900627.pdf  5.4 inches, Turkey; Penile length and somatometric parameters: a study in healthy young Turkish men [2011]: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3739181/  5.4 inches, Egypt; Penile lengthsomatometric parameters relationship in healthy Egyptian men [2014]: https://scihub.se/https://onlinelibrary.wiley.com/doi/abs/10.1111/and.12275   5.5 inches, Turkey; Relationship between penile size and somatometric parameters in 2276 healthy young men [2012]: https://www.nature.com/articles/ijir201153  5.9 inches, Egypt; Consultation for smallsized penis in the Egyptian males: A case control study [2016]: https://journals.sagepub.com/doi/full/10.1177/1557988314565167  5.9 inches, Egypt; Penile dimensions of diabetic and nondiabetic men with erectile dysfunction: A case control study [2015]: https://journals.sagepub.com/doi/full/10.1177/1557988315592026
Notes All these studies contain average penis sizes as measured by researchers [i.e not self reported]. There are a number of other self reported studies/surveys out there that provide a wider variety of figures. These are excluded because of the unreliability and inaccuracy of self reported results [they are subject to bias]. These studies provide either stretched flaccid lengths or erect lengths. Stretched flaccid length is similar to erect length [but not exactly]. These figures represent averages. Average doesn't mean all. Within every racial group, there is a range of sizes [small, medium and large] regardless of the average. Contrary to popular belief, the average isn't actually 67 inches. All averages are below 6 inches. There is only one study that I could find that contains researchermeasured figures for Africans. More research is needed. However this study does challenge the "all black penises are big" stereotype. While Egypt is indeed on the continent of Africa, modernday Egyptians aren't black. They are mostly middle eastern peoples. Asian and Caucasian averages are very similar. I don't know how to explain the two lowest figures [3.8 and 3.7 inches] for Asian and Caucasian men. They may be outliers. With the exception of the two lowest figures [for Asian and Caucasian men], the averages for all the races [including Asian and Caucasian] are fairly close to each other. Figures for Asian men [all the figures] challenge the "all Asian penises are small" stereotype. More evidence can be found in the uploaded photos and video. When representing Asian men, some people like to focus solely on the 3.8 inch figure from the South Korean study, while conveniently excluding the other studies performed on Asian men [5 5.5 inches]. The 3.7 inch figure from the Canadian study is also conveniently never mentioned. This is obvious racial bias intended to portray Asian men in the least favourable light. Even if there were a small difference in averages, in the stereotypical order that people imagine, this doesn't mean that Asian men are universally small/smaller or sexually inferior. Asian men come in a range of sizes and skill levels. The science in this area is definitely inconclusive but these studies at least serve to challenge racial stereotypes. More research is needed. More information can be found at: https://www.reddit.com/user/Asian_Stereotypes_/comments/bfd3et/average_penis_sizes_according_to_race/