2139 E 4th St Space 244 Crime & Safety Report

Safety overview

Total Registered Sex Offenders:

within 2 miles

within 1 mile

Total Reported Incidents & Crimes

1531

Last 12 months

Neighborhood Score

Safe

Few crime incidents, possibly some minor offenses (theft, vandalism). No or very few sex offenders within a moderate range.

Unlock the full safety report before making a decision about this neighborhood.

Full report contains 263 offenders within 5 miles and 1531 crime incidents in the last 12 months.

263 Registered Sex Offenders within 5 miles Near 2139 E 4th St Space 244, Ontario, CA 91764

43 Rape

208 Child Involved

41 Assault

15 Other

Name / Age / Tags	Address	Distance	Risk
PERALTA, JAMES MENCIAS 74 years old Child Involved Rapist	8701 ARROW RTE RANCHO CUCAMONGA, CA, 91730	1.5	Medium
RAMIREZ, FRANCISCO 71 years old Child Involved	9573 PINEWOOD DR RANCHO CUCAMONGA, CA, 91730	0.5	High
SIMPSON, DENNIS LEN 62 years old Child Involved	8214 JADEITE ST RANCHO CUCAMONGA, CA, 91730	1.9	Medium
CARDENAS, STEPHAN 44 years old Child Involved	1126 E BERMUDA DUNES ONTARIO, CA, 91761	3.9	Medium
NELSON, DAVID YNGVAR 56 years old Child Involved Violent	2527 S GREENWOOD PL ONTARIO, CA, 91761	3.9	Medium

1531 Crime & Incidents in the Last 12 Months

82 Severe

62 Medium

403 Low

984 Other

Crime	Location (Approx.)	Severity	Description
Medical Emergency 07/16/2026 09:17 PM	Elm Ave, Rancho Cucamonga, CA 91730	Unknown	As discussed during the dispatch call, medical aid was provided for a sick person at Del Mar Apartments near Elm Avenue and No Cross Street. Units Charlie 2, Medic Engine 100, and Engine 178 responded.
Medical Emergency 07/16/2026 09:16 PM	Elm Ave, Rancho Cucamonga, CA 91730	Unknown	As discussed during the dispatch call, a medical aid was dispatched for a sick person at Del Mar Apartments near Elm Avenue and Mill Cross Street. Medic Engine 178 was assigned to the location.
Medical Emergency 07/16/2026 08:43 PM	W Foothill Blvd, Rancho Cucamonga, CA 91730	Unknown	As discussed during the dispatch call, a person reported abdominal pain near Foothill Boulevard and Nut Street. Medic Engine 172 was dispatched.
Assault Report 07/16/2026 08:06 PM	Carnelian St, Rancho Cucamonga, CA	Unknown	As discussed during the dispatch call, dispatch reports a possible assault near Via del Prado between Napa Court and Carnelian Street in Rancho Cucamonga. Medic Engine 17 was assigned, and the scene was later reported clear for law enforcement.
Traffic 07/16/2026 07:53 PM	Ontario International Airport (ONT), International Arrivals Terminal, International Wy, Ontario, CA 91761	LOW	As discussed during the dispatch call, air traffic control advised an inbound aircraft of a possible flight hazard from a police helicopter flying low near the final approach to Ontario International Airport. The helicopter was reportedly not on the radio frequency used by inbound traffic.

Nearby Schools

Schools within 2 miles of this property, nearest first.

School	Distance
Corona Elementary	0.5 mi
Valley View High (Continuation)	0.7 mi
Chaffey District Online High	0.8 mi
Chaffey Community Day	0.8 mi
Arroyo Elementary	0.9 mi
Mariposa Elementary	1.1 mi
Vineyard Elementary	1.1 mi
Ray Wiltsey Middle	1.1 mi
Del Norte Elementary	1.2 mi
Ontario Center	1.4 mi
Cucamonga Elementary	1.5 mi
Rancho Cucamonga Middle	1.5 mi
Los Amigos Elementary	1.5 mi
Bear Gulch Elementary	1.6 mi
Berlyn Elementary	1.9 mi

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Frequently asked questions

Is 2139 E 4th St Space 244 in a low-crime area?

The current report summarizes crime-related incidents within 5 miles during the last 12 months. HoodScore compares these records with relevant benchmarks, but no report can guarantee future safety.

Why are traffic and medical calls shown separately from crime?

Traffic, medical and fire records are public-safety incidents but are not necessarily crimes. HoodScore separates them to avoid overstating the crime count.

How often is this HoodScore report updated?

The report displays its generated date. Update frequency varies by source and is explained in the HoodScore methodology.

How is the HoodScore calculated?

HoodScore combines nearby crime and offender data into a neighborhood safety score. Visit https://www.hoodscore.com/hoodscore-calculator.html to see how the calculation works.