Olmos Creek Water and the Slimp Family’s Hilltop House
Castle Hills started in the early 1920s with a handful of families drawn by water from Olmos Creek, many of them tied to the oil business, according to the city’s history. The name came from the Slimp family’s house on the hill. The town incorporated in 1951. It covers about two and a half square miles, sits roughly seven miles north of downtown, and is surrounded on every side by San Antonio.
The 2020 Census counted 3,978 residents, a slight dip from a decade earlier. The median age was 48.4, and nearly nine in ten occupied homes were lived in by their owners. That combination usually means long tenure. People here have had years to accumulate things worth keeping, and years to grow comfortable with habits, like leaving the car in the drive, that once seemed perfectly safe.
Being an island city has practical consequences. Castle Hills keeps its own city hall and its own police department, so the rules for alarms, solicitors, and permits are written here, not downtown. Thieves, of course, pay no attention to city limits. The streets of San Antonio run right up to the edge of town, and whatever moves through those surrounding neighborhoods can roll across the line in a few seconds.
When the Car Itself Is What They Want
Most driveway crime is browsing: a thief tries handles and takes what is loose. A theft ring is a different animal. It wants the vehicle itself, and it tends to arrive with a plan rather than a hunch. KSAT’s October 2026 report described residents unsettled by exactly that, after a teenager was accused of targeting Castle Hills.
No camera stops a determined crew by itself, but cameras change the math. A security camera with clear night vision on the driveway captures faces, plates, and timing that help police connect cases. Motion-triggered floodlights end the darkness thieves count on. Parking in the garage, with garage door control to confirm the door actually closed, takes the vehicle off display. Our guide to vehicle burglary and catalytic converter theft covers the rest of the driveway.
Keys deserve a thought too. Many newer vehicles start with a fob rather than a key, and a fob left in a bowl by the front door sits a few feet from the driveway. Keep fobs deeper in the house, and never leave a spare in the glove box. Small habits, but a crew that finds a car locked, lit, recorded, and keyless will usually move along to an easier street.
A theft ring wants the vehicle, and it tends to arrive with a plan.
Crime report · 2026
We found no verified annual crime count for Castle Hills. The clearest recent signal is an October 2026 KSAT report on an alleged vehicle theft ring.
Reporting agency: Castle Hills Police Department
Plainly put: we could not verify an annual crime total for the City of Castle Hills. We found no annual report from the Castle Hills Police Department online, and no press coverage of the city’s recent FBI figures. Several websites publish crime indexes for places called Castle Hills, but the ones we checked describe a San Antonio neighborhood of the same name, not this city, so we have left them out. For official numbers, ask the Castle Hills Police Department, which also reports to the FBI.
What the record does show is a concern about vehicles. On October 23, 2026, KSAT reported that Castle Hills residents were worried for their safety after a teenager was accused of targeting the area in a vehicle theft ring. KSAT has also reported on Castle Hills police adding staff and patrols around the city’s business district ahead of a holiday shopping season. Neither story is a statistic. Both point at the same exposed asset: the car parked outside.
The Empty House Between Owners
The 2020 Census listed 17.9 percent of Castle Hills housing units as vacant. Some were between sales, some mid-renovation, some simply waiting. An empty house is a quiet invitation. Copper, appliances, and fixtures left inside are worth something, and nobody notices a pickup at the curb if it looks like a contractor’s.
If you own a house that sits empty for a while, monitoring matters more, not less. Door and motion sensors on a cellular communicator need no internet service or resident to work. A water sensor catches the slow leak that would otherwise run for weeks. When the new owner moves in, an existing panel can often be handed over through a system takeover rather than ripped out.
Holiday Season Along the Business District
Castle Hills has a business district of its own, and its police department has prepared for holiday traffic before. KSAT reported the department adding staff and patrols around the business district ahead of the shopping season, expecting more calls for car break-ins and home burglaries. More shoppers mean more parked cars, more packages, and more people nobody recognizes.
For a shop or office, business security built for after-hours protection pays off in exactly that season. Monitored contacts on every entry, glass-break detection on the storefront, and commercial video surveillance that covers the parking lot as well as the sales floor. Footage of the lot also helps customers whose cars were hit, which is good for goodwill.
How We Start in Castle Hills
For Castle Hills, we bring a locally owned outfit that has worked across Bexar County since 2010 under Texas DPS Private Security Bureau license B16898. Our visit begins in the driveway, since that is where Castle Hills’ recent worries begin, then moves to the doors, windows, and any equipment already installed.
You leave with a written plan and no deadline. When you are ready, we install, train the household, and connect the system to 24/7 monitoring from a UL-listed central station. Book your free security assessment to begin.

Landmarks we know well
- Olmos Creek
- Castle Hills City Hall
- North Star Mall (nearby, in San Antonio)







