Jurupa Valley counts around 27,132 households, within a service area where the broader household base runs near 249,000 total and about 131,000 of those are owner-occupied. Median household income across the area sits at $96,190, which is also the figure for Jurupa Valley itself.
What that buys, hardware-wise: houses from the early 1980s typically came with a two-car attached garage and a single wide door rather than the narrower single-bay setups you sometimes find on older 1960s construction closer to the region's median. Wider doors mean heavier doors, which means the torsion springs doing the lifting are sized differently than what you'd pull off a narrower 1960s door down the road.
We can't tell you what's behind any specific garage door without seeing it, and house flips or additions over the decades mean some of these doors have been swapped more than once already. The build-year pattern is a starting point for diagnosis, not a guarantee of what's on the wall.