New ham radio operators in San Mateo County, California
104 people earned their first amateur radio license here in the past 12 months. Updated weekly from FCC data.
At a glance · Data as of
- New hams · last 30 days
- 3
- New hams · last 12 months
- 104
- ▼ 16% vs prior 12 mo
- Active licensed hams
- 2,969
- Upgrades · 12 mo
- 33
- Vanity callsigns · 12 mo
- 12
- Address updates · 12 mo
- 33
- Often a move into the area
- Expiring · next 6 mo
- 126
About ham radio in San Mateo County
San Mateo County added 104 new amateur radio operators in the past 12 months, down 16% from the year before. That ranks #7 of 58 California counties for new hams, in the top quarter. Technicians make up 60% of local licensees, close to the California average of 58%. 33 operators upgraded their license in the past year, the moment many buy their first HF rig. 126 licenses expire in the next six months, a chance for clubs to reconnect.
New hams by month
Show data table
| Month | New hams |
|---|---|
| Oct 2025 | 0 |
| Nov 2025 | 6 |
| Dec 2025 | 3 |
| Jan 2026 | 6 |
| Feb 2026 | 6 |
| Mar 2026 | 3 |
| Apr 2026 | 15 |
| May 2026 | 13 |
| Jun 2026 | 14 |
| Jul 2026 | 9 |
| Aug 2026 | 25 |
| Sep 2026 | 4 |
| Total | 104 |
License classes
| Class | Hams | Share | California |
|---|---|---|---|
| Technician | 1,781 | 60% | 58% |
| General | 561 | 19% | 20% |
| Amateur Extra | 486 | 16% | 17% |
| Advanced | 81 | 3% | 3% |
| Novice / Other | 60 | 2% | 2% |
Bar = San Mateo County share · Tick = California share
In the past 12 months, 13 operators upgraded to General and 18 to Amateur Extra.
How San Mateo County compares
#7 of 58 California counties for new hams in the past 12 months
| Per 1,000 active hams | San Mateo | California | U.S. |
|---|---|---|---|
| New hams, past 12 months | 35.0 | 30.2 | 32.3 |
| Upgrades, past 12 months | 11.1 | 9.8 | 14.7 |
| Expiring, next 6 months | 42.4 | 61.5 | 57.3 |
104 new hams in San Mateo County this past year. Get next month’s list free.
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Questions about new hams in San Mateo County
How many new ham radio operators were licensed in San Mateo County last year?
104 people in San Mateo County, California received their first FCC amateur radio license in the 12 months ending Oct 1, 2026, down 16% from the year before.
How many licensed ham radio operators are in San Mateo County?
2,969 active amateur licensees: 60% Technician, 19% General, 16% Amateur Extra.
Where does this data come from?
From the FCC Universal Licensing System (ULS) public amateur license database, which we download every Monday. Addresses are matched to counties with the U.S. Census Bureau geocoder. This page shows totals only.
How can my club reach new hams in San Mateo County?
Create a free Ham Recruiter account and save a 5 to 25 mile search around your club. On the 1st of every month we email you a CSV of new hams, upgrades and other changes in and around San Mateo County. Sign up free.
Can I see the names or call signs on this page?
No. Public pages show totals only. Verified Ham Recruiter users can search and export lists for outreach; see how licensee information is handled.
About this data
Data as of . Source: FCC Universal Licensing System (ULS) weekly amateur license database; county from U.S. Census Bureau geocoding. Aggregates only, no individual licensee data is shown. Aggregate figures © Ham Recruiter, CC BY 4.0.
How we count
- New ham: an active licensee whose first license was granted in the period.
- Address updates: a change of FCC mailing address, often a move into the area.
- Counts use each licensee’s current FCC address. Someone licensed here who later moved is counted where they live now.
- Each license keeps only its most recent event of each type, so two upgrades in one year count once.
- PO-box-only addresses often can’t be matched to a county, so rural counties are slightly undercounted.