Browse the Concord phone book to find residents and businesses throughout Contra Costa County. If you received a call from an unrecognized number with area code 925, use our lookup tool to see who it belongs to before you call back.
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Find phone numbers for city businesses, public services, and organizations by category.
Got a phone call or message from a Concord phone number you don't recognize? Before you answer, call back, or reply, use our phone number lookup service to find out who called you.
California phone numbers use area codes 925. Select a code below to look up numbers starting with it.
According to the National Do Not Call Registry, California residents filed 287,916 complaints about unwanted calls in 2024:
Phone numbers reported to the FTC as unwanted calls by Concord residents in the last 30 days.
+1 (925) 268-7961
Calls pretending to be government, businesses, or family and friends
1 report ·
+1 (925) 233-7686
Dropped call or no message
1 report ·
+1 (925) 257-9112
Reducing your debt (credit cards, mortgage, student loans)
1 report ·
+1 (912) 316-9574
Other
1 report ·
+1 (680) 290-6299
Reducing your debt (credit cards, mortgage, student loans)
1 report ·
+1 (925) 445-3647
Other
1 report ·
+1 (434) 538-4290
Reducing your debt (credit cards, mortgage, student loans)
1 report ·
+1 (925) 365-3124
Other
1 report ·
+1 (925) 474-0747
Other
1 report ·
+1 (434) 322-1701
Reducing your debt (credit cards, mortgage, student loans)
1 report ·
Received a call from a business but aren't sure it's really them? Contra Costa County, according to U.S. Census Bureau data, includes 21,994 firms and 25,646 establishments employing 339,920 people.
| County | Percent of City | Firms | Establishments |
|---|---|---|---|
| Contra Costa | 100.00% | 21994 | 25646 |
Use our reverse lookup service to verify whether a number belongs to a legitimate local business, not scammers spoofing local numbers to gain your trust.
If you receive fraudulent calls or suspect a scam attempt, report it to reportfraud.ftc.gov or local police department using the following contacts:
Concord has a population of 125410 people (median age of 38.10) - thousands of potential callers you might not recognize: neighbors, an old contact, or someone you actually want to talk to. Use our local white pages to find residents' phone numbers and addresses sourced from Contra Costa County, California state, and other public records.