Killingworth, CT ZIP code
The ZIP code for Killingworth, Connecticut is 06419. It is in Middlesex County.
- Population in these ZIPs
- 6,240
- Avg. median income
- $140,700population-weighted
- Typical home value
- $632,200population-weighted
- Metro area
- Hartford-West Hartford-East Hartford, CT
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Killingworth, CT ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 06419 | 6,240 | $140,655 | $632,200 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Killingworth
Frequently asked questions
What is the ZIP code for Killingworth, CT?
The ZIP code for Killingworth, CT is 06419.
What county is Killingworth, Connecticut in?
Killingworth ZIP codes are in Middlesex County.