ZIP Code 03103 has segments in 2 Counties (Hillsborough, Rockingham).
The ZIP Code maps and database are updated 4 times per year.
Database updated: October 1, 2025, Maps updated: May 1, 2024.
POPULATION | |
|---|---|
| Total Population | 38,593 (100%) |
| Population in Households | 38,076 (98.7%) |
| Population in Families | 28,080 (72.8%) |
| Population in Group Quarters1 | 517 ( 1.3%) |
| Population Density | 3,969 |
| Diversity Index2 | 66 |
INCOME | |
| Median Household Income | $77,413 |
| Average Household Income | $96,298 |
| % of Income for Mortgage4 | 31% |
| Per Capita Income | $39,719 |
| Wealth Index5 | 68 |
| Socioeconomic Status Index6 | Low (44.2) |
HOUSING | |
|---|---|
| Total HU (Housing Units) | 16,484 (100%) |
| Owner Occupied HU | 7,310 (44.3%) |
| Renter Occupied HU | 8,584 (52.1%) |
| Vacant Housing Units | 590 ( 3.6%) |
| Median Home Value | $386,553 |
| Average Home Value | $413,156 |
| Housing Affordability Index3 | 68 |
HOUSEHOLDS | |
| Total Households | 15,894 |
| Average Household Size | 2.40 |
| Family Households | 9,331 |
| Average Family Size | 3.00 |
GROWTH RATE / YEAR |
2020-2025 | 2025-2030 |
|---|---|---|
| Population | -0.14% | 0.16% |
| Households | 0.55% | 0.58% |
| Families | 0.29% | |
| Median Household Income | 2.01% | |
| Per Capita Income | 2.48% | |
| Owner Occupied HU | 0.95% |
The table below compares 03103 to the other 254 ZIP Codes in New Hampshire by rank and percentile using July 1, 2025 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.
| Variable Description | Rank | Percentile |
|---|---|---|
| Total Population | # 1 | 100th |
| Population Density | # 4 | 99th |
| Median Household Income | # 197 | 23rd |
| Housing Affordability Index | # 76 | 30th |
| Per Capita Income | # 219 | 14th |
| Diversity Index | # 2 | 100th |
Additional comparisons and rankings can be made with a VERY EASY TO USE New Hampshire Census Data Comparison Tool.