Flea markets and swap meets, classified here as Latino vendor markets (LVM), operate as social support systems for their communities. LVM are hubs of economic opportunity for business owners, yet they currently lack support from the field of urban planning. This paper explores four LVM case studies in California and Texas. A mixed-methods approach was used which included site observations, geospatial analysis and surveys with over 200 vendors, customers, and market managers to explore the urban linkages of LVM. Key findings include that LVM are at risk of potential redevelopment; they lack accessibility and perpetuate car dependence; yet there are opportunities to support LVM through planning tools such as improvement districts. They present lessons for exploring the links between the public and private sectors in reinforcing the social, economic and political benefit of marketplaces in the city.