Drive southeast out of Tucson on Interstate 10 and the open desert toward the Rincon Mountains keeps sprouting new streets. That stretch is Vail, an unincorporated Pima County community that has been one of the metro's fastest-growing corners for two decades — and it is about to add another 1,180 homes. Vail Crossings, a 609-acre master-planned project from Bourn Companies on Success Drive and the freeway frontage road, is set to break ground in 2026 after the county signed off on the financing district that pays for its infrastructure. Here is the July 24, 2026 High Growth Area read on where Vail is growing and what is going up. ~16,994 — Vail's estimated 2026 population. +20.5% — Population growth since the 2020 census. 1,180 — Single-family homes entitled at Vail Crossings. 609 acres — Combined footprint of the project A Community Growing Faster Than Its Neighbors Vail sits about 20 miles southeast of downtown Tucson, strung along Interstate 10 and Old Vail and Colossal Cave roads in the flats below the Rincon Mountains. It is not an incorporated town — it is an unincorporated pocket of Pima County — but its growth curve reads like a boomtown. World Population Review estimates Vail's 2026 population near 16,994, up roughly 20.5% since the 2020 census and rising about 2.56% a year; over the longer arc, the area has expanded on the order of 400% since 2001. That kind of climb is why builders keep buying desert here: raw, developable land along a major interstate, close enough to Tucson's job centers to draw commuters, with room for full master plans rather than one-off infill. What Vail Crossings Adds Vail Crossings is the headline project. Developed by Bourn Companies on Success Drive and the I-10 frontage road, it spans a combined 609 acres and is entitled for 1,180 single-family homes alongside a commercial component, at a reported cost of about $87 million. To fund the roads, water, and other infrastructure, the Pima County Board of Supervisors approved the Vail Crossings/Desert Vistas Community Facilities District — a special taxing district — earlier in 2026, and construction is set to begin this year. The scale is real enough that a 2025 county traffic-impact study projected the finished community would generate roughly 3,484 vehicle trips a day. Some nearby residents have raised concerns about traffic, wildlife, and preserving the area's historic landmarks, the kind of pushback that tends to shadow large greenfield projects. The Growth (~16,994 people, +20.5% since 2020, Unincorporated): Vail is an unincorporated Pima County community about 20 miles southeast of downtown Tucson. World Population Review estimates its 2026 population near 16,994 — up roughly 20.5% since the 2020 census, and up on the order of 400% since 2001. Vail Crossings (609 acres, 1,180 homes, $87M): A Bourn Companies master-planned project on Success Drive and the I-10 frontage road, spanning a combined 609 acres and entitled for 1,180 single-family homes plus commercial space. Construction is set to begin in 2026 after Pima County approved its financing district. The Job Anchors (RTX Raytheon, Davis-Monthan, UA Tech Park): Vail's commute runs toward Tucson's south and southeast side: the RTX Raytheon missile campus near Tucson International Airport, Davis-Monthan Air Force Base, the University of Arizona Tech Park, and large Amazon and FedEx operations — most reachable via I-10 or nearby Rita Ranch. Buying In (~$412,783 avg, -2.3% YoY, ~66 days): Zillow put the average Vail home value near $412,783 in mid-2026, down about 2.3% year over year, with a median around $405,000. Redfin data showed homes taking roughly 66 days to sell across about 965 sales in the prior year. Confirm current figures before relying on any single one. The Jobs Pulling People Here Growth this steady needs a paycheck behind it, and Vail's sits a short interstate hop away. The area feeds Tucson's south- and southeast-side employment core: RTX's Raytheon missile campus near Tucson International Airport — one of the region's largest private employers — plus Davis-Monthan Air Force Base, the University of Arizona Tech Park, and sizable Amazon and FedEx logistics operations. Most are reachable on I-10 or through the adjacent Rita Ranch area, which is what makes a home 20 miles out pencil for a worker who wants newer construction and more land than the inner city offers. That commute math is a big part of why the southeast corridor keeps drawing rooftops rather than emptying out. What It Costs to Buy In For buyers weighing Vail against Marana, Oro Valley, or Sahuarita, the price picture is currently a touch softer than a year ago. Zillow put the average Vail home value near $412,783 in mid-2026, down about 2.3% year over year, and various trackers pegged the median in the $401,000–$414,000 range. Redfin data showed homes taking roughly 66 days to sell, with about 965 sales over the prior twelve months and a listed range running from the low-$60,000s to more than $1.5 million as scattered land and custom builds pull the top end up. New master-planned inventory like Vail Crossings tends to add supply at the entry-to-mid tier, so treat any single figure as directional and check current comps for a specific street. None of this is investment advice — it is physical and price context for one of the metro's most active growth corridors. Quick reference (July 24, 2026): Vail is an unincorporated Pima County community about 20 miles southeast of downtown Tucson along I-10 (ZIP 85641), with a 2026 population near 16,994 — up roughly 20.5% since the 2020 census. Vail Crossings, a Bourn Companies master-planned project on Success Drive and the I-10 frontage road, spans a combined 609 acres and is entitled for 1,180 single-family homes plus commercial space at a reported $87 million; Pima County approved its Community Facilities District earlier in 2026 and construction is set to begin this year. Zillow put the average Vail home value near $412,783 in mid-2026. Growth plans, timelines, and home values change, so confirm current details before relying on any single figure. The Takeaway Vail has spent 20 years turning open interstate desert into one of Tucson's busiest growth fronts, and Vail Crossings is the next chapter — 1,180 homes and a commercial center on 609 acres, cleared to break ground in 2026. For anyone tracking where the metro is adding rooftops, or cross-shopping newer construction along the southeast corridor, the stretch of I-10 past Rita Ranch is where a lot of the region's next decade gets built. Watch the frontage road off Success Drive; the earthmovers are the story to follow. Sources World Population Review — "Vail, Arizona Population 2026" — worldpopulationreview.com/us-cities/arizona/vail — accessed July 24, 2026 (for the 2026 population near 16,994, the roughly 20.5% growth since the 2020 census, the 2.56% annual growth rate, and the roughly 400% growth since 2001). Arizona Sonoran News / Tucson Sentinel — "Some Vail residents concerned construction could impact historic landmarks" — arizonasonorannews.com and tucsonsentinel.com — accessed July 24, 2026 (for Vail Crossings on Success Drive and the I-10 frontage road, the combined 609 acres, the 1,180 single-family units, the reported $87 million cost, Bourn Companies as developer, construction set to begin this year, the 2025 Pima County traffic study projecting about 3,484 daily trips, and resident concerns about traffic, wildlife, and historic landmarks). Citizen Portal — "Pima County approves Vail Crossings/Desert Vistas community facilities district and several land-use items" — citizenportal.ai — accessed July 24, 2026 (for the Pima County Board of Supervisors' approval of the Vail Crossings/Desert Vistas Community Facilities District that finances the master-planned community's infrastructure). Bourn Companies — "Vail Crossings" — bourncompanies.com/projects/vail-crossings — accessed July 24, 2026 (for the developer's description of the project). Zillow — "Vail, AZ Housing Market" — zillow.com/home-values/21021/vail-az — accessed July 24, 2026 (for the average Vail home value near $412,783 in mid-2026, down about 2.3% year over year). Redfin — "Vail Housing Market" — redfin.com/city/26454/AZ/Vail/housing-market — accessed July 24, 2026 (for homes taking roughly 66 days to sell and about 965 sales over the prior twelve months). Realtytrac and Movoto — "85641 / Vail, AZ market trends" — realtytrac.com and movoto.com — accessed July 24, 2026 (for the median sale and list prices in the roughly $401,000–$414,000 range). All figures are current as of July 24, 2026; growth plans, timelines, and home values change, so confirm current details before relying on any single figure. This post is for informational purposes only and is not an offer to sell or a solicitation of an offer to purchase real estate. Kyle Berglund and Tierra Antigua Realty fully support and comply with the Fair Housing Act and the Equal Opportunity Act.