17857's Top REALTORS® And Real Estate Agents
17857 is a zip code in Northumberland, PA. Here are the Top Real Estate Agents that service 17857.
Top Agent
(11)
Joseph A. Humphrey
Century 21 Mertz & Associates, Inc.
19 Years of experience
19+ Sales in the last 12 months
$63.7M
All-Time Sales
$130K - $2.6M
Price Range
8%
Negotiated Off List
The 17857 Housing Market
Verified MLS market data for the 17857 zip code in Northumberland, PA as of July 2026.
Median Sale Price
$220K
Median Days on Market
59 days
Sale-to-List Price
99.0%
Homes Sold (monthly)
7
Across all of Northumberland: $200K median and 58 days on market.
In 17857 specifically, ranked agents on EffectiveAgents closed 8 verified sales in the last 12 months, with a median sale price of $182K.
Zip market data through July 2026. Agent sales figures reflect verified sales by ranked agents, not total market volume.
Top Realtors by Zip Code in Northumberland, PA
Why you need a Top Real Estate Agent in 17857, PA
17857 has 2 active real estate agents for you to choose from. How do you know if you're selecting the best one in your area? Simple: EffectiveAgents has analyzed the performance history and past transactions of every agent in 17857.
How We Rank 17857 Real Estate Agents
Our rankings are built from verified transaction data, not advertising spend. For every agent we analyze more than fifteen performance signals, including recent and all-time sales, days on market, negotiation results, price-point fit, and verified reviews.
Agents cannot pay for placement in these rankings. The underlying data refreshes as new closed transactions are reported, so rankings shift with real market performance. Learn how we rank agents.
Rankings reviewed by Kevin Stuteville, Licensed Florida Real Estate Broker (License BK3068131), Founder of EffectiveAgents.
Data last updated: July 2026
Frequently Asked Questions
You have questions.
Luckily, we have answers.
How many realtors are there in 17857?
There are 2 real estate agents in 17857.
Who are the top real estate agents in 17857?
Top selling real estate agents in 17857 include Joseph A. Humphrey.
What is the best time of year to sell a home in the Northumberland area?
Based on the last 24 months of verified MLS market data, homes in the Northumberland area sell fastest and closest to asking price when they go under contract in August. To hit that window, plan to list around June.
How much do homes sell for in 17857?
Ranked agents on EffectiveAgents closed 8 verified sales in 17857 over the last 12 months, with a median sale price of $182,000.
Free Real Estate Calculators
Planning a move in Northumberland? Run the numbers first.