We estimate the number of street vendors in New York City. First, we summarize the process by which vendors receive licenses and permits to operate legally in New York City. Second, we describe a survey that was administered by the Street Vendor Project while distributing Coronavirus relief aid to vendors operating in New York City both with and without a license or permit. Third, we calculate the total number of vendors using ratio estimation, finding approximately 23,000 street vendors operate in New York City (20,500 mobile food vendors and 2,300 general merchandise vendors) with one third located in just six ZIP Codes (11368 (16%), 11372 (3%), and 11354 (3%) in North and West Queens and 10036 (5%), 10019 (4%), and 10001 (3%) in the Chelsea and Clinton neighborhoods of Manhattan). Fourth, we provide a theoretical justification of our estimates based on the theory of point processes. Finally, we evaluate the accuracy of the ratio estimator when the distribution of vendors is explained by a Poisson or Yule process, and we discuss several policy implications. In particular, our estimates suggest the American Community Survey misses the majority of New York City street vendors.

翻译：本文对纽约市街头摊贩的数量进行了估算。首先，我们概述了摊贩在纽约市合法经营所需获取执照与许可证的流程。其次，我们描述了由"街头摊贩项目"组织在向纽约市持照/无照摊贩发放冠状病毒救助物资期间开展的一项调查。第三，我们采用比率估计法计算摊贩总数，发现纽约市约有23,000名街头摊贩（其中20,500名为流动食品摊贩，2,300名为综合商品摊贩），其中三分之一集中分布在六个邮政编码区域：皇后区北部和西部的11368（16%）、11372（3%）、11354（3%），以及曼哈顿切尔西和克林顿街区的10036（5%）、10019（4%）、10001（3%）。第四，我们基于点过程理论为估算结果提供了理论依据。最后，我们评估了当摊贩分布服从泊松过程或尤尔过程时比率估计量的准确性，并讨论了若干政策启示。特别需要指出的是，我们的估算表明美国社区调查遗漏了纽约市大部分街头摊贩。