Santa Barbara County's population shifted north after 2019, with North County growing 2.6% to 239,321 residents by 2025 while South County shrank 4.3% to 203,074.
North County grew from 233,293 residents in 2019 to 239,321 in 2025, while South County fell from 212,171 to 203,074 over the same six years. The county total barely changed, ending 2025 at 442,395, down 1.3% from its 2020 peak, because North County’s gains and South County’s losses nearly cancel each other out.
Population by Community
Annual resident population for Santa Barbara County communities, its North and South County regions, and the county total, 2001–2025. City figures are ZIP-based and approximate post-office areas rather than incorporated city limits.
Source: Lightcast; UCSB Economic Forecast Project
Guadalupe grew 17.6% over the six years, the fastest in the county, and Santa Maria grew 6.2% to 149,737 residents, the county’s largest community. On the other side, the city of Santa Barbara lost 6.1% of its residents, falling to 134,762, with Buellton down 9.8%, Lompoc down 4.8%, and Carpinteria down 4.7%. These community figures are built from ZIP codes and approximate postal areas rather than exact city limits, so they describe communities rather than incorporated boundaries.
Where residents settle determines where housing demand, school enrollment, retail traffic, and the available workforce sit. Six years of northward drift means the county’s population center of gravity, and the planning questions that follow it, keep moving toward the Santa Maria valley.