Direct Answer
Portsmouth, NH has a CostOfCity index of 128, which is 28% above the national baseline. Average modeled rent is $1,869/month and the single-adult living cost estimate is $4,927/month.
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Cost of Living in Portsmouth: The Full Picture
Portsmouth is home to roughly 22,000 people in the heart of New Hampshire's northeastern landscape. With everyday expenses running 28% above the national average, this is a city where an international business hub where Fortune 500 headquarters anchor a premium talent market. That economic DNA shapes everything from housing to what you pay for a plumber. Below you'll find cost data across every category we track.
Portsmouth has a transit-oriented economy where subway-adjacent real estate commands eye-watering premiums
The housing market features one of the tighter housing markets in the region, where inventory stays low and prices stay high
Four distinct seasons mean you're paying for both heating and cooling, plus the freeze-thaw cycle does a number on foundations and pipes.. The lifestyle here is characterized by World-class museums, restaurants, and universities within a short commute — if you don't mind the price of admission..
At 28% above the national baseline, Portsmouth isn't cheap, but it's far from the most expensive market either. Smart housing choices and lifestyle adjustments can make your budget work comfortably.
💰 Purchasing Power in Portsmouth
Purchasing power adjusted to national average baseline. In Portsmouth, your dollar buys 22% less than the national average.
🔺 Where Portsmouth Costs More
📊 Closest to National Average
Portsmouth is above average in most categories. These cost the least above baseline:
💰 Salary Landscape
vs national average · higher = better
Monthly Living Expenses in Portsmouth
What it actually costs to live in Portsmouth each month — from tight budgets to comfortable lifestyles.
Estimates include housing, food, transportation, utilities, insurance, and discretionary spending. Based on Portsmouth's cost index of 128 applied to national spending surveys.
🏘️ Neighborhood Cost Variation
Don't let the metro-wide numbers fool you — Portsmouth is a city of micro-markets. The most expensive ZIP codes can cost twice as much as the most affordable ones for identical services. Even budget-friendly neighborhoods here will run above the national average, but the gap can be manageable.
Portsmouth vs U.S. Average Cost of Living
Category-by-category affordability grades — based on deviation from the national average.
🏠 Home Services in Portsmouth
What contractors charge for the most common repairs, installations, and remodels
Roof Replacement
+59%HVAC Installation
+36%Plumbing Services
+32%Electrical Work
+21%Kitchen Remodel
+51%Bathroom Remodel
+72%House Painting
+20%Flooring Installation
+44%Landscaping
+55%Fence Installation
+36%Window Replacement
+60%Solar Panel Installation
+27%Water Heater Replacement
+58%Deck Building
+23%Pool Installation
+22%Tree Removal
+46%Garage Door Repair
+29%💼 Business Startup Costs in Portsmouth
Full startup cost breakdowns — from lease deposits to working capital
Start a Restaurant
+33%Start a Coffee Shop
+50%Start a Food Truck
+24%Start a Gym
+12%Start a Daycare
+28%Start a Hair Salon
+38%Start a Laundromat
+44%Start a Bakery
+20%Start a Bar
+57%Start a Cleaning Business
+28%Start an Airbnb
+25%Start a Trucking Business
+33%📊 Cost of Living in Portsmouth
Monthly expenses for housing, food, transportation, and everyday necessities
Cost of Living
+23%Rent Prices
+32%Grocery Costs
+17%Utility Costs
+14%Transportation Costs
+47%Childcare Costs
+32%Gym Membership
+20%🛡️ Insurance in Portsmouth
Annual and monthly premium estimates for major insurance categories
Car Insurance
+25%Home Insurance
-3%Health Insurance
+31%Business Insurance
+27%Life Insurance
+44%Renters Insurance
+32%Pet Insurance
+22%Dental Insurance
+34%Motorcycle Insurance
+16%⚖️ Legal Services in Portsmouth
Attorney fees, court costs, and total legal service expenses
Personal Injury Lawyer
+36%Divorce Lawyer
+40%DUI Lawyer
+49%Immigration Lawyer
+27%Estate Planning Lawyer
+36%Workers Comp Lawyer
+53%Bankruptcy Lawyer
+50%💰 Salaries & Jobs in Portsmouth
Annual compensation by experience level, role, and specialization
Software Developer Salary
+52%Registered Nurse Salary
+21%Teacher Salary
+40%Electrician Salary
+21%Plumber Salary
+26%Accountant Salary
+31%Physical Therapist Salary
+35%Police Officer Salary
+56%Dentist Salary
+24%Real Estate Agent Salary
+19%How Much Income Do You Need in Portsmouth?
✅ Best For
- High earners seeking career growth
- Those willing to trade cost for opportunity
- Professionals in specialized fields
⚠️ Not Ideal For
- Entry-level workers without savings
- Budget-conscious retirees
- Large families on a single income
Talk to current residents about hidden costs. Property taxes, commute expenses, and local fees can add 10-15% to your estimated monthly budget. Local subreddits and Facebook groups are goldmines for this intel.
CostOfCity Value Index
The CostOfCity Value Index combines cost-of-living data with median income, savings potential, and cost growth trends to produce a single score. Higher = better value for your money. Updated quarterly.
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Frequently Asked Questions About Portsmouth
Is Portsmouth a good place to start a business?
Portsmouth's business environment is shaped by NH's regulatory framework and local commercial real estate costs. Higher operating costs require stronger revenue projections, but the market also tends to support higher price points. Check our business startup cost data for specific figures.
How does Portsmouth compare to other cities in NH?
Within New Hampshire, Portsmouth has a cost index of 128. Nearby options include Manchester and Concord, which offer useful comparison points.
What are the most expensive cost categories in Portsmouth?
Like most US cities, housing is the single largest expense in Portsmouth, typically accounting for 30-40% of household budgets. Insurance and home services tend to be the next most variable categories, influenced by northeastern climate conditions and state regulations.
Explore Portsmouth in Depth
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