Rosson Road has an Adams, Tennessee mailing address. It also sits physically in Montgomery County, outside Adams city limits, according to an August 2026 Smokey Barn News analysis of the 37010 ZIP code. A house on that road gets "Adams" on its mail and its listing sheet. Montgomery County handles its tax bill.
That is normal for 37010. The ZIP code covers about 79 square miles across both counties. About 60.31% of that area is in Robertson County and about 39.69% is in Montgomery County. The incorporated City of Adams makes up only about 3.27% of it, and a small piece of Clarksville falls inside the ZIP as well. Those percentages describe land area, not how many homes are on each side. Either way, they mean the word "Adams" can't tell you much about what a house will cost to own each year.
The County Line Matters More Than The City Limit
Here is how the rates compare. Tennessee assesses residential property at 25% of its appraised value. The Tennessee Comptroller's 2025 Tax Aggregate Report turns each total rate into a residential "effective rate," which is the yearly tax as a percentage of a home's appraised value.
| Where the parcel actually sits | Rate per $100 of assessed value | Residential effective rate on appraised value, 2025 | Yearly tax per $100,000 of appraised value |
|---|---|---|---|
| Unincorporated Robertson County | $1.80 | 0.45% | $450 |
| Inside City of Adams | $2.10 ($1.80 county + $0.30 city) | 0.525% | $525 |
| Unincorporated Montgomery County | $2.10 | 0.525% | $525 |
The middle two rows are identical. A house on a city lot in Adams and a house on acreage across the line in Montgomery County carry the same $2.10 rate. The Montgomery County figure is current. The county's assessor page lists its 2026 rate at $2.10. Robertson County's rate is current too. The Robertson County Commission kept the county rate at $1.80 for fiscal 2026-27 at its August 17, 2026 meeting, Citizen Portal reported, when it adopted Resolution No. 081726075 by a vote of 23 in favor with one absence. The $0.30 Adams city rate in the table is the 2025 figure from the Comptroller's report.
The low bill in 37010 belongs to rural Robertson County.
What The Gap Looks Like On One House
Take a home appraised at $350,000 and put it in each spot. The math uses the residential effective rates above:
- Unincorporated Robertson County: about $1,575 a year
- Inside Adams city limits: about $1,838 a year
- Unincorporated Montgomery County: about $1,838 a year
- Inside Clarksville city limits, for the parts of 37010 that fall there: about $2,721 a year, using Montgomery County's 2026 combined county and city rate of $3.11
The difference between the first three is about $260 a year, or roughly $22 a month in escrow. That is real money but small. The Clarksville line is the one that changes a monthly payment noticeably. For a VA buyer whose taxes go into the mortgage payment, the tax figure behind a payment estimate should match the parcel's actual jurisdiction, not just the town printed on the listing.
If the Robertson County discount looks small, it is actually larger than the table shows. The reason is the county's reappraisal timing.
Part Of Robertson County's Lower Bill Comes From Reappraisal Timing
Tennessee counties reappraise on a set schedule, and appraised values drift away from market prices between reappraisals. Each year, the state measures that drift with an appraisal ratio, which shows what share of market value a county's appraisals represent.
The two counties are at different points in that schedule. According to the Comptroller's 2025 report, Robertson County last reappraised in 2023 and Montgomery County in 2024. In 2025, Montgomery's appraisal ratio was 1.0000, meaning appraisals matched market value. Robertson's was 0.9218, a county-level median figure that puts the typical appraisal at about 92% of market value.
As a result, a Robertson County house pays a lower rate on an appraisal that, for a typical property, already sits below what the house would sell for. Applying the 0.9218 ratio to the 0.45% residential effective rate gives roughly 0.41% of market value. A Montgomery County house pays 0.525% on an appraisal at full market value.
You can see the effect in the Comptroller's weighted average effective tax rate, a countywide index of tax as a share of estimated current property value. Robertson County's index fell from 0.4905 in 2024 to 0.4538 in 2025. The City of Adams index fell from 0.6431 to 0.5906. The tax rates themselves didn't change. Market values kept rising while the 2023 appraisals stayed put. Montgomery County's index barely moved, from 0.6011 to 0.6018.
That gap closes at reappraisal. When Robertson County reappraises, appraisals reset toward market value. What happens to individual bills then depends on the rate the county sets afterward. Ask the Robertson County Assessor of Property when the next reappraisal is scheduled.
The Montgomery side runs on a known schedule. The Montgomery County Assessor runs a five-year cycle that ends with a full revaluation, and counting forward from the 2024 reappraisal, the next one falls in 2029.
The Adams City Rate Could Come Up Next Year
Rural Robertson County is the cheapest of the three today, but the other rates can change too. At the May 14, 2026 Adams commission meeting, City Manager Anna Redfern asked the board to start thinking about whether to raise city property taxes next year, according to the meeting minutes. At the same meeting, commissioners approved the FY2027 budget, Ordinance 2026-79, by a 2-0-1 vote. The city portion is only $0.30 of the $2.10 total, so any change applies to a small base. Still, it is the one rate in 37010 that city officials have publicly said they will revisit, and it applies only to the roughly 3% of the ZIP code inside city limits.
Checking A Parcel Before You Write An Offer
You don't need a survey to find out which jurisdiction a house is in. The public records already show it. These are the official lookups:
- Statewide assessment search. The Comptroller's Tennessee Property Assessment Data search and the TN Property Viewer map show the county, appraised value and assessment for a parcel.
- Robertson County and City of Adams bills. The Robertson County Trustee uses tnproptax.com, which lists both the Robertson County Trustee and the City of Adams. Adams also links its own city tax search.
- Montgomery County bills and records. The Montgomery County Trustee has a property tax lookup, and the assessor's property record search shows parcel details. The assessor's rate page also has a proration calculator for estimating how taxes split between buyer and seller at closing.
If a past tax bill on a 37010 house shows a city line item, find out which city sent it. On the Montgomery side, a Clarksville line changes the yearly cost more than anything else in this post.
Quick Answers
Does an Adams address mean the home is inside the City of Adams? No. About 97% of the land in ZIP 37010 is outside Adams city limits, and some of it is in Montgomery County.
Is the Robertson County side always cheaper? Only outside Adams city limits. Inside the city, the $1.80 county rate plus the $0.30 city rate equals Montgomery County's $2.10.
Will rural Robertson County stay the cheapest? Its rate held at $1.80 for fiscal 2026-27. Part of its advantage comes from a 2025 median appraisal ratio of 0.9218, which puts the typical appraisal at about 92% of market value, and the next reappraisal will reset those values.
This post is general information, not tax, legal or financial advice. Confirm the numbers for any specific property with the county assessor, the trustee or your own tax professional.
Comparing two houses that both say "Adams" but sit on different sides of the county line? Make Clarksville Home will pull the parcel records for both and show you what each will cost to own each year before you make an offer. Schedule a free consultation.
