The short answer: $764 a year on average — and why that is not your price
The average NFIP premium in South Carolina is $764 a year, or $64 a month, according to NerdWallet’s analysis of 2026 National Flood Insurance Program rates (NerdWallet, “How Much Does Flood Insurance Cost?”, updated May 18, 2026). The national NFIP average in the same analysis is $976 a year ($81 a month) — so on that measure South Carolina sits $212 a year below the national average.
But it is a benchmark, not a quote, and the reason matters more than the number. A state average is the total premium written across every NFIP policy in the state divided by the number of policies — it blends beachfront homes in high-risk zones with inland homes in low-risk zones, old homes with new ones, and small policies with large ones. Your home is one address with one flood zone, one elevation and one rebuild cost, and none of those is an average. The guide to flood insurance by state states the same rule for every state: your flood zone is an address-level fact, not a state-level one, and two homes on the same street can sit in different zones.
So use the $764 figure the way a benchmark is meant to be used. If a quote for your home comes in far above it, the gap is a question to ask — what zone is the home in, what is its elevation, what limits and deductible were quoted — not a reason to assume the quote is wrong. And if a quote comes in far below it, ask the same questions in reverse: a low premium on thin cover, or on a zone rating that does not match the official flood map, is not a bargain. The rest of this guide explains what moves a South Carolina premium away from the average, and how to get a price for your own address.
Where the $764 figure comes from
NerdWallet’s state averages come from the NFIP’s most recent “Policy Information by State” report: each state average is the total written premium for all communities in the state divided by the number of policies in force. That method is worth stating plainly, because it explains why other analyses of the same FEMA data give different numbers. Different analyses use different dates and different methods — some count only residential policies, some use a different reporting date, some average differently — and so they land on different figures for the same state. None of them is a quote, and none of them is wrong in the way a wrong price is wrong; they are different summaries of the same underlying data, taken at different times.
Two details of the method matter for reading the figure. First, the figures cover all NFIP policies — residential and commercial — not just homeowners’ policies, so the average blends policy types as well as places. Second, the figures include the mandatory federal policy fee, so the $764 is the full average premium as written, not a base rate before fees. When you compare a quote against the benchmark, compare like with like: your quoted premium including its fees, against an average that also includes them.
That is also why this page lists no other South Carolina average alongside the $764 figure: other analyses of the same FEMA data publish different numbers, and listing them would look like a choice between competing prices when they are really competing summaries. One benchmark, from one named analysis, with its method stated, beats several figures that cannot be reconciled. Note the date too — NerdWallet’s analysis of 2026 rates, updated May 18, 2026 — and check the source for the current analysis, because premiums move.
High-risk zones vs low-risk zones: $1,114 vs $745
The single biggest split in the numbers is the flood zone. In the same NerdWallet analysis, NFIP policies in high-risk zones — zones whose names start with A or V — average $1,114 a year, while policies in low- or moderate-risk zones average $745 a year. That is a gap of $369 a year between the two averages (simple arithmetic on the two stated figures), and it is the clearest illustration on this page of why the address matters more than the state: the zone alone moves the average by roughly half the South Carolina figure itself.
High-risk zones are the Special Flood Hazard Areas — the areas the official flood maps show as having the highest chance of flooding. Zone A covers riverine and coastal areas at risk of flooding; Zone V covers coastal areas at risk from wave action as well as flooding, which is why V zones appear along the South Carolina coast. Low- or moderate-risk zones are the areas outside those boundaries. The zone is decided by the official flood map for your exact address, and the only way to know it is to look it up: the flood insurance by state guide explains how to check your zone on the official flood-map service, entering the exact address and noting the zone letter.
Two cautions belong here. First, a low- or moderate-risk zone does not mean no risk: flooding happens outside high-risk zones too, and the $745 average is an average premium, not a promise that flooding will not happen. Second, the zone is the starting point for the price, not the whole price — since October 2021, FEMA prices each property on its own risk, as the next-but-one section explains, so two homes in the same zone can still be priced differently. The zone decides the broad band your premium falls in; the property’s own risk decides where inside that band it lands.
Why coastal South Carolina costs more than the Upstate
South Carolina’s coast — Charleston, Myrtle Beach and the surrounding Lowcountry — sits in high-risk A/V zones far more often than the Upstate, and that is the main reason coastal premiums run higher. The coast faces the Atlantic, storm surge and wave action, and the low-lying land behind it; the Upstate, around Greenville and Spartanburg, sits higher and further from the sea, and far fewer of its addresses fall inside a Special Flood Hazard Area. The geography is the pricing: the same NFIP programme, the same state, and a different flood map.
No city-level median or average premium is stated on this page, and that is deliberate. City figures for places like Charleston or Myrtle Beach appear in search results, but they conflict with each other — different analyses, different dates, different methods, the same problem as the state figures — and none of them was verified against a named source for this page. A city average would mislead in the same way a state average does, only more locally: a Charleston address on high ground outside a high-risk zone and a Charleston address on the waterfront inside a V zone are not the same risk, and no city figure separates them. What can be said is the direction of the difference: coastal addresses fall in high-risk zones far more often, so coastal premiums run higher on average.
That coastal–inland split is also why a South Carolina premium cannot be judged by the state average alone. An Upstate quote well below $764 a year is not necessarily a bargain — a low-risk zone and higher elevation would explain it — and a coastal quote well above $764 is not necessarily an overcharge: a V zone on the waterfront would explain that. In both cases ask the same question: what zone is the address in, and what did the rater use for elevation and rebuild cost? The flood insurance calculator on this site runs your own figures, so you can see how the inputs move the result for your address rather than for a state average.
What Risk Rating 2.0 changed
Since October 2021, FEMA has priced NFIP flood insurance under Risk Rating 2.0, which prices each property on its individual risk — flood frequency, rebuild cost, elevation, distance to a flood source, and similar factors — rather than by flood zone alone. Before that change, the zone carried far more of the price; under the new method, two homes in the same zone can be priced differently because their elevation, their distance from the water and their rebuild cost differ. That is the change that makes the state average least useful as a quote: the price is now built up from the property, not read off the zone.
The change did not raise every premium. Premiums dropped for about 23% of existing policyholders under the new method, according to FEMA via NerdWallet; everyone else paid the same or more. That split is worth remembering when you hear the new method described as either a price cut or a price rise: it was both, for different properties, depending on whether the old zone-based price had over- or under-stated the property’s own risk.
Federal law generally caps annual premium increases at 18%, with exceptions — including vacation homes and properties with multiple severe flood claims, which can rise faster. The cap is a limit on the annual increase, not a limit on the premium itself: a premium can still climb year by year up to the cap until it reaches the property’s full-risk price. If your premium has risen sharply, ask your insurer or agent to state in writing whether the 18% cap applies to your policy and what the full-risk premium for your property is, so you can see how many years of increases remain.
What NFIP cover actually buys — and what it does not
NFIP cover is capped: $250,000 for the building and $100,000 for contents. Those are the maximum limits an NFIP policy will pay, whatever the home is worth — so a home that would cost more than $250,000 to rebuild is not fully covered by an NFIP policy alone, and contents worth more than $100,000 are not fully covered either. Whether the caps are enough for your home depends on your rebuild cost and your contents; if they are not enough, the gap is what private flood insurance exists to fill. The guide to NFIP vs private flood insurance takes that comparison apart, including where private cover can exceed the NFIP caps and where it cannot match them.
There is also a waiting period. Standard NFIP cover takes effect 30 days after you buy it — so a policy bought today does not cover a flood next week. That is the same 30-day waiting period stated on this site’s other flood pages, and it is the reason flood insurance cannot be bought in response to a forecast: by the time a storm is named, the waiting period will still be running. If you are buying a home with a mortgage in a high-risk zone, your lender will usually require flood cover before closing, and the waiting period is one more reason to arrange it early rather than at the last minute.
Two more limits are worth knowing before you compare a quote. First, NFIP building cover is about the structure and its essential systems, and contents cover is about what is inside it — the policy wording decides what counts in each, and exclusions differ by policy, so check the wording of any policy you are considering rather than assuming a limit means full replacement. Second, flood insurance is separate from homeowners insurance: a standard homeowners policy does not cover flood damage, which is why flood cover is a separate policy and a separate premium. South Carolina’s own rules for homeowners cover are a separate question again — see the guide to South Carolina homeowners insurance laws — and neither guide substitutes for the other.
How to get a price for your address
Start with the zone. Use the official flood-map service named in the flood insurance by state guide, enter your exact address, and note the zone letter and whether the property sits in a Special Flood Hazard Area. That single lookup tells you which of the two averages — $1,114 for high-risk zones or $745 for low- or moderate-risk zones — is the nearer benchmark for your home. If the map and a quote disagree about the zone, ask which map and which date each one used: flood maps are revised, and a quote built on an old map is a quote built on old facts.
Then run your own figures. The flood insurance calculator on this site lets you enter your own inputs and compare the result against the benchmarks on this page, so the comparison is for your address rather than for a state average. When you get a quote — from the NFIP through an insurer or agent, or from a private flood insurer — compare it on the same terms: the same building and contents limits, the same deductible, and the same waiting period. A quote for lower limits or a higher deductible is not comparable with a quote for the NFIP caps, however close the headline premiums look.
Finally, compare NFIP with private cover before you decide. Private flood insurance can offer higher limits than the NFIP’s $250,000 / $100,000 caps, and sometimes a shorter waiting period, but it is priced by the insurer and its terms vary by policy — so the comparison is a matter of reading two wordings side by side, not of comparing two headline premiums. The guide to NFIP vs private flood insurance sets out what to compare, and the guide to South Carolina homeowners insurance laws covers the state rules that sit alongside flood cover.