Sumner, Claremont

Updated · 1,525 residents

Sumner is a quiet, residential enclave defined by its mid-century California Ranch homes and access to local green spaces like Griffith Park. While the area offers high air quality and strong educational options, residents should expect moderate noise levels from nearby road traffic. It is a stable, family-oriented community that prioritizes a suburban atmosphere over commercial activity.

Key Highlights

Mixed Privacy LevelsModerate WalkabilityModest Visual VarietyLimited Public GreenerySemi-Rural FeelQuiet and FunctionalHigh Noise LevelsClean AirQuiet Residential VibeHigh Insurance CoverageMostly LiberalMulti-generational MixHigh Flood RiskHigh Fire Risk
Map showing the location of Sumner, Claremont, CA

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About Sumner

Adjacent to Piedmont Mesa, the Sumner neighborhood in Claremont, California, is a post-World War II residential subdivision defined by its mid-century suburban character. Developed primarily between the 1940s and 1960s, the neighborhood features cohesive streetscapes of single-story California Ranch-style homes. The community is centered around Griffith Park, established in 1961, and the Sumner Danbury Elementary School. The neighborhood's name shares a legacy with Reverend Charles Burt Sumner, a founding trustee of Pomona College who originally built his historic 1887 Queen Anne Victorian "Sumner House" nearby on Piedmont Mesa before it was relocated to the college campus in 1901. Today, Sumner remains a well-preserved example of Claremont's postwar expansion.

The area maintains a consistent residential character with well-preserved architecture and a significant tree canopy, contributing to high visual appeal. It serves as a quiet retreat within Claremont, benefiting from the high-performing Claremont Unified School District, which includes the local Sumner Elementary. The neighborhood is largely devoid of commercial development, reinforcing its status as a peaceful, community-focused environment. Prospective residents should note that the neighborhood experiences moderate noise levels due to its proximity to major roadways, which impacts acoustic comfort. While it offers good walkability and is considered dog-friendly, the low liveliness score reflects a lack of local nightlife or retail hubs. According to iHuus data, the area provides a secure residential experience with reliable health insurance coverage and favorable flood safety, making it a practical choice for families seeking a stable, long-term living environment.

Neighborhood Scores Across 15 Qualities

Privacy Index
Score: 5.1 out of 10

Residential spacing varies between standard suburban yards and denser clusters of apartments or mobile homes. According to iHuus data, the level of separation between neighbors is slightly lower than the Claremont average.

Ranked #32 in Claremont →
Walkability
Score: 7.3 out of 10

Sidewalks and safe crossings are available along most residential streets, though larger intersections and high-density areas can make navigation more difficult. This area is slightly less walkable than the average for Claremont.

Ranked #33 in Claremont →
Visual Appeal
Score: 6.1 out of 10

Standard tract housing and high-density apartments characterize the landscape, resulting in a visual profile that is less varied than the Claremont average. While some affluent pockets feature private pools and well-maintained properties, the area contains significant mobile home and apartment density according to iHuus data.

Ranked #33 in Claremont →
Dog Friendliness
Score: 5.7 out of 10

Minimal public park access and few green verges make this area less ideal for dog owners compared to the Claremont average. Residents primarily rely on private yards or nearby school fields for pet exercise.

Ranked #33 in Claremont →
Urban-Rural Index
Score: 6.5 out of 10

Open land and scattered homes are common throughout the area, providing a slightly more rural atmosphere than the Claremont average. Residents will find a mix of dense suburban developments and pockets of woodland or field surroundings according to iHuus data.

Ranked #20 in Claremont →
Neighborhood Vibe
Score: 3.1 out of 10

Suburban streets and green spaces define this area, which offers a tranquil atmosphere but lacks the commercial density found in other parts of the city. Most daily activities and dining options require a car, as business access is limited to specific pockets near civic and light industrial zones.

Ranked #30 in Claremont →
Acoustic Comfort
Score: 1.4 out of 10

Frequent disturbances from nearby railroad tracks and freeway traffic characterize this area. According to iHuus data, acoustic comfort in Sumner is significantly lower than the Claremont average.

Ranked #30 in Claremont →
Air Quality
Score: 10 out of 10

Air quality remains exceptionally clean and poses little to no health concern. This level of air purity is slightly higher than the average found throughout Claremont, according to iHuus data.

Ranked #1 in Claremont →
Industrial Proximity
Score: 8.1 out of 10

Large-scale industrial presence is virtually nonexistent in this area, though some light commercial activity and retail structures near the southern edge may introduce minor traffic. Most of the neighborhood consists of quiet streets and open green spaces, making it slightly more industrial-adjacent than the Claremont average.

Ranked #29 in Claremont →
Health Insurance Coverage
Score: 8.8 out of 10

Health insurance access is nearly universal among residents, sitting well above the Claremont average according to iHuus data.

Ranked #18 in Claremont →
Ideological Lean
Score: 8.4 out of 10

Political leanings in this area trend toward the liberal side, though this is slightly less pronounced than the broader Claremont average according to iHuus data.

Ranked #20 in Claremont →
Population Age Profile
Score: 5.1 out of 10

A balanced mix of young adults, families, and older residents characterizes the area, mirroring the general demographic spread seen across Claremont. This age distribution creates a diverse community profile according to iHuus data.

Ranked #26 in Claremont →
Flood Safety
Score: 2.3 out of 10

Properties in this area are situated within a designated floodplain, which implies a higher susceptibility to flooding than the Claremont average. According to iHuus data, residents may find that flood insurance is typically required for homes in this neighborhood.

Ranked #33 in Claremont →
Fire Safety
Score: 0.8 out of 10

Extreme fire hazards are present in this area, representing a significantly higher risk than the Claremont average according to iHuus data. Residents should prioritize maximum protection measures and fire preparedness due to the severe level of danger.

Ranked #10 in Claremont →

Compare with Any Neighborhood

Compare with
DimensionSumnerArbol Verde
🚶
Walkabilityavg 8.6
Score: 7.3 out of 10
Score: 8 out of 10
🔊
Acoustic Comfortavg 2.58
Score: 1.4 out of 10
Score: 2.4 out of 10
🤫
Privacy Indexavg 5.58
Score: 5.1 out of 10
Score: 4.9 out of 10
🎨
Visual Appealavg 7.17
Score: 6.1 out of 10
Score: 6.9 out of 10
🐕
Dog Friendlinessavg 6.82
Score: 5.7 out of 10
Score: 8 out of 10
🗺️
Urban-Rural Indexavg 6.89
Score: 6.5 out of 10
Score: 6.5 out of 10
✨
Neighborhood Vibeavg 4.64
Score: 3.1 out of 10
Score: 6.6 out of 10
🏥
Health Insurance Coverageavg 8.37
Score: 8.8 out of 10
Score: 8.4 out of 10
🌿
Air Qualityavg 9.85
Score: 10 out of 10
Score: 10 out of 10
🏭
Industrial Proximityavg 8.67
Score: 8.1 out of 10
Score: 8.2 out of 10
🌊
Flood Safetyavg 3.81
Score: 2.3 out of 10
Score: 3.6 out of 10
🗳️
Ideological Leanavg 8.75
Score: 8.4 out of 10
Score: 9.5 out of 10
👥
Population Age Profileavg 5.03
Score: 5.1 out of 10
Score: 3.5 out of 10
🔥
Fire Safetyavg 0.41
Score: 0.8 out of 10
Score: 1.5 out of 10
🏫
School Quality
Score: not available
Score: not available

Frequently Asked Questions

Is Sumner a good neighborhood for families?
Yes, the neighborhood is served by the Claremont Unified School District, including the well-regarded Sumner Elementary. Its quiet streets and proximity to Griffith Park provide a safe and stable environment for children.
How is the noise level in the Sumner neighborhood?
The neighborhood has an acoustic comfort score of 3.8 out of 10. Residents may notice road traffic noise, as the area is located near major thoroughfares.
What is the architectural style of homes in Sumner?
The area is characterized by mid-century California Ranch-style homes. These single-story residences were primarily developed between the 1940s and 1960s, creating a cohesive aesthetic throughout the community.

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