Cheapest States for Dog Heartworm Treatment in 2026 — All 50 Ranked
Mississippi is cheapest for heartworm treatment (melarsomine protocol) at $1,170. That's $330 below the national average. Hawaii runs $2,100 — a $930 spread across the country.
Full melarsomine protocol: $1,000–$2,500. Includes pre-treatment testing, 3 injections, and restricted activity period.
5 Cheapest States for Dog Heartworm Treatment
Mississippi
$1,170Arkansas
$1,200West Virginia
$1,200Alabama
$1,230Oklahoma
$1,230All 50 States Ranked — Dog Heartworm Treatment Cost
Based on national avg of $1,500 × state cost-of-living index. 2026.
| # | State | Est. Cost |
|---|---|---|
| 1 | Mississippi | $1,170 |
| 2 | Arkansas | $1,200 |
| 3 | West Virginia | $1,200 |
| 4 | Alabama | $1,230 |
| 5 | Oklahoma | $1,230 |
| 6 | Louisiana | $1,280 |
| 7 | Kentucky | $1,280 |
| 8 | Kansas | $1,280 |
| 9 | Iowa | $1,280 |
| 10 | South Dakota | $1,280 |
| 11 | Missouri | $1,280 |
| 12 | North Dakota | $1,320 |
| 13 | South Carolina | $1,320 |
| 14 | Nebraska | $1,320 |
| 15 | New Mexico | $1,320 |
| 16 | Indiana | $1,320 |
| 17 | Tennessee | $1,320 |
| 18 | Michigan | $1,350 |
| 19 | Ohio | $1,350 |
| 20 | Idaho | $1,350 |
| 21 | Georgia | $1,350 |
| 22 | Wyoming | $1,350 |
| 23 | Texas | $1,380 |
| 24 | North Carolina | $1,380 |
| 25 | Wisconsin | $1,380 |
| 26 | Montana | $1,380 |
| 27 | Arizona | $1,430 |
| 28 | Utah | $1,430 |
| 29 | Florida | $1,500 |
| 30 | Pennsylvania | $1,500 |
| 31 | Minnesota | $1,500 |
| 32 | Maine | $1,500 |
| 33 | Nevada | $1,580 |
| 34 | Illinois | $1,580 |
| 35 | Vermont | $1,580 |
| 36 | Delaware | $1,580 |
| 37 | Virginia | $1,580 |
| 38 | Oregon | $1,650 |
| 39 | New Hampshire | $1,650 |
| 40 | Rhode Island | $1,650 |
| 41 | Colorado | $1,650 |
| 42 | Washington | $1,720 |
| 43 | Maryland | $1,720 |
| 44 | Alaska | $1,880 |
| 45 | Connecticut | $1,880 |
| 46 | New Jersey | $1,880 |
| 47 | New York | $1,950 |
| 48 | Massachusetts | $1,950 |
| 49 | California | $2,030 |
| 50 | Hawaii | $2,100 |
Cost estimates derived from national veterinary fee averages (AVMA, Banfield Pet Hospital data) adjusted by state cost-of-living multipliers. Individual clinic prices vary — urban areas within a state typically run 15–25% above state averages.
Why Heartworm Treatment Costs Vary by State
The 930 gap between Mississippi and Hawaii reflects real structural differences in veterinary overhead. Staff wages track local cost of living. Clinic rent in rural Mississippi is a fraction of what a practice pays in downtown Boston. Both states require the same licensing — the difference is overhead, not skill.
Southern and lower-Midwest states dominate the cheap end of this list. It's consistent across nearly every procedure: lower commercial real estate + lower wages = lower invoices. The expensive states are coastal, urban-heavy markets where clinic operating costs are simply higher.
Using This Data
These figures are state averages, not guarantees. Within any state, rural practices typically charge 15–25% less than urban clinics. A vet in rural Alabama and a vet in Birmingham are both cheaper than California — but the rural one is cheaper than the city one.
If you're getting quotes, use the state average as a baseline. A quote more than 30% above the state estimate deserves a second opinion. Quotes below it are normal — some practices price below average to compete.