New Castle County property record for 604 William St, Delaware City, DE 19706
| Property Type | Single Family Home |
|---|---|
| Lot Size | 0.02 acres (871 sqft) |
| Owner | Individual Name on Record |
| Tax Bill | $322 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 22-007.00-029 |
| Primary APN | 22-007.00-029 |
|---|
| 1st Floor Area | 510 sqft |
|---|---|
| Basement Area | 510 sqft |
| Lot Area | 871 sqft (0.02 acres) |
|---|---|
| Lot Dimensions | 40 ft deep x 17 ft wide |
| Sewer | Connected |
|---|
| Street Address | 604 WILLIAM ST |
|---|---|
| City | DELAWARE CITY |
| State | DE |
| Zip | 19706-7770 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | 22R-1 |
| Legal Subdivision | DELAWARE CITY |
| Jurisdiction | NEW CASTLE DE |
| Township / Civil Division | RED LION |
| Census Block Group | 2 |
| Census Block | 2003 |
| Census Tract | 16404 |
Source: NPS National Register of Historic Places, as of August 1, 2026
| Historic District | Within the Delaware City Historic District listed 1983 · 205 contributing resources · NRIS 83003515 |
|---|
Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.
Source: New Castle County records, as of May 6, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Individual Name on Record |
|---|---|
| Mailing Address | 604 WILLIAM ST, DELAWARE CITY, DE 19706-7770 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Deed Book / Page | 5 / 358 |
| Record Updated | Jun 8, 2026 |
Source: New Castle County assessment roll, as of April 13, 2026
| Type | Name |
|---|---|
| State | Delaware |
| County | New Castle County |
| Municipality | Delaware City |
| Unified School District | Colonial School District (PK - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2025 | $322.00 (-96.86%) | $53,600 (+1,431.43%) Land $53,600 |
| 2023 | $10,271.00 (+4.78%) | $3,500 (-) Land $3,500 |
| 2022 | $9,802.00 | $3,500 Land $3,500 |
Assessed value is set for property tax purposes and is not a market price estimate.
Source: FEMA National Flood Hazard Layer, effective January 21, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on Record median of 93 policies |
| Community Rating System | Class 9 (5% premium discount) |
| Nearby Flood Policies | 93 in force |
| Nearby Flood Claims | 18 (1980–2014) |
| Claims Outside the SFHA | 2 of 18 |
| Most Recent Claim | Apr 2014 · river or lake flooding |
| Claims by Event |
|
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 97% of the US · lower than 87% of Delaware |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond ember reach |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | DELAWARE CITY WATER DEPARTMENT (AWC) serves 2,610 people · EPA ID DE0000566 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Jan 2025 |
| Lead | 1 ppb (2023–2025) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None last 3 years |
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.
Source: FCC Broadband Data Collection, based on 243 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Verizon Fiber · Fixed Wireless in parts of the area | 2,300 / 2,300 |
| Breezeline Cable | 1,000 / 50 |
| Starlink Satellite | 280 / 30 |
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