Original analysis of Census, FEMA and NOAA data

Orlando mold and moisture risk by ZIP code

Name: Orlando metro mold and moisture risk by ZIP code
Creator: Orlando Mold Desk
License: https://creativecommons.org/licenses/by/4.0/

In Orlando, mold usually starts with the air and the roof, then the age of the house decides how fast. Every home here fights 137 days a year of 70°F dew points. Older homes add tired ductwork and drain lines, and storm-flooded streets add the rest. Look up your ZIP below.

Data as of October 29, 2026 · Method and sources

Your ZIP code

What we found

The tropical-air season is getting longer. Orlando International averaged 137 days a year with a mean dew point of 70°F or more over 2016-2024, up from 118 over 1974-1990. July and August are nearly solid: 30.9 and 31 of 31 days. The longest unbroken run averaged 95 days; in 2024 it was 127.
Ian was the flood of record here. The airport logged 7.72 inches on September 28, 2022, its wettest day since records began in 1952, and 13.1 inches over two days. 1,829 federal flood claims followed in the three counties (867 Orange, 573 Seminole, 389 Osceola), with $120.6 million paid. That is 38% of every flood claim on record here.
Ian hit away from the coast, along the rivers and creeks. The most claims came from 34744 (Kissimmee east, 154), 32822 (Conway east, 114), 32765 (Oviedo, 109), 32732 (Geneva, 104). Of all paid claims with a known flood zone, 36% were outside the high-risk zones.
Old Orlando is close to downtown. 27% of homes in the city's 328xx ZIPs predate 1980, against 21% elsewhere. 32805 (Parramore and west of downtown) leads at 74%, then 32806 (Delaney Park and Lake Como, 73%) and 32730 (Casselberry south, 68%).
Lots of shared walls. 26% of homes across the metro are in buildings with five or more units, and 40% of occupied homes are rented. In an apartment, the leak often starts next door or upstairs. Mold in a rental.

Every ZIP code

Sorted by share built before 1980. Click a column heading to sort.

ZIP	Area	County	Built before 1980	Median year built	Rented	5+ unit buildings	Homes	NFIP claims	Ian claims
32805	Parramore and west of downtown	Orange	74%	1966	57%	29%	9,606	63	30
32806	Delaney Park and Lake Como	Orange	73%	1967	31%	20%	12,589	91	53
32730	Casselberry south	Seminole	68%	1975	53%	29%	3,029	7	4
32804	College Park	Orange	67%	1964	35%	19%	10,427	91	35
32809	Pine Castle	Orange	67%	1974	47%	28%	10,702	183	98
32803	Colonialtown and Audubon Park	Orange	64%	1965	47%	27%	12,004	44	19
32701	Altamonte Springs east	Seminole	55%	1979	49%	37%	12,109	94	35
32808	Pine Hills	Orange	55%	1978	58%	34%	21,044	38	4
32789	Winter Park	Orange	54%	1977	36%	25%	13,236	115	49
32807	Azalea Park	Orange	53%	1979	50%	30%	13,836	65	38
32751	Maitland	Orange	52%	1979	39%	37%	11,103	37	14
32750	Longwood	Seminole	48%	1981	25%	12%	10,831	52	8
32792	Winter Park east (Aloma)	Orange	44%	1982	52%	37%	24,573	107	50
32812	Conway and Belle Isle	Orange	43%	1983	40%	29%	15,354	66	45
32714	Altamonte Springs	Seminole	40%	1983	49%	44%	16,659	112	34
32779	Longwood (Wekiva)	Seminole	40%	1983	19%	13%	11,597	67	8
34769	St. Cloud	Osceola	39%	1986	33%	5%	11,404	58	13
32810	Lockhart	Orange	36%	1986	49%	30%	14,502	29	13
32811	Kirkman, Millenia and Orlo Vista	Orange	36%	1986	70%	54%	18,340	163	30
32707	Casselberry	Seminole	35%	1985	34%	22%	17,398	79	41
32839	Oak Ridge	Orange	33%	1989	75%	60%	24,708	62	10
32798	Zellwood	Orange	30%	1985	11%	0%	1,684	2	0
32801	Downtown Orlando	Orange	28%	2003	73%	81%	12,660	27	10
32822	Conway east	Orange	28%	1988	58%	42%	27,287	188	114
32773	Sanford south	Seminole	27%	1991	42%	24%	14,053	88	25
32771	Sanford	Seminole	26%	2001	38%	26%	24,872	230	70
32818	Hiawassee	Orange	26%	1987	42%	21%	18,412	23	2
32703	Apopka	Orange	25%	1991	34%	14%	22,727	40	2
34741	Kissimmee	Osceola	22%	1992	67%	48%	22,386	168	88
32708	Winter Springs	Seminole	22%	1988	25%	16%	20,129	137	68
32819	Dr. Phillips and Sand Lake	Orange	21%	1990	44%	39%	15,427	51	10
32817	Union Park	Orange	19%	1990	44%	29%	13,963	86	41
32732	Geneva	Seminole	19%	1991	4%	0%	2,068	285	104
34761	Ocoee	Orange	18%	1999	28%	14%	15,903	34	2
32825	Waterford Lakes	Orange	16%	1994	35%	17%	22,385	161	94
34744	Kissimmee east	Osceola	15%	2001	34%	16%	24,090	273	154
32709	Christmas	Orange	14%	1995	15%	0%	689	3	2
32826	UCF area	Orange	13%	1994	51%	25%	11,242	26	8
32712	Apopka north	Orange	13%	1997	15%	2%	17,481	14	0
32835	MetroWest	Orange	11%	1994	52%	41%	19,328	16	1
32766	Chuluota	Seminole	10%	2002	11%	0%	5,081	58	25
32833	Wedgefield	Orange	10%	2001	19%	4%	3,992	21	8
34787	Winter Garden	Orange	9%	2011	32%	14%	35,901	70	5
32824	Meadow Woods	Orange	9%	2004	24%	11%	20,909	37	13
34771	St. Cloud east	Osceola	9%	2010	15%	0%	12,782	75	17
32827	Lake Nona	Orange	8%	2012	39%	18%	7,497	5	3
32765	Oviedo	Seminole	8%	1996	29%	18%	23,954	216	109
32746	Lake Mary	Seminole	8%	1996	37%	30%	20,514	47	7
32821	South of International Drive	Orange	8%	2001	68%	72%	14,958	17	0
32837	Hunters Creek	Orange	8%	1995	43%	32%	21,375	43	8
34743	Buenaventura Lakes	Osceola	8%	1991	31%	5%	13,528	92	35
34786	Windermere	Orange	7%	2006	28%	20%	17,389	56	9
32814	Baldwin Park	Orange	6%	2007	64%	56%	4,545	2	1
34746	Kissimmee west (US 192)	Osceola	6%	2004	28%	15%	26,252	141	43
32836	Bay Hill and south Dr. Phillips	Orange	5%	2001	40%	33%	10,700	83	7
32829	Ventura and east Orlando	Orange	5%	2004	27%	19%	7,846	36	25
34772	St. Cloud south	Osceola	4%	2007	17%	2%	12,439	54	4
32820	Bithlo and east Orange	Orange	4%	2005	11%	0%	3,699	18	7
34759	Poinciana south	Osceola	4%	2006	20%	1%	18,439	71	19
34747	Celebration and Reunion	Osceola	4%	2004	50%	50%	22,432	14	6
34773	Harmony	Osceola	3%	2009	10%	0%	2,041	1	0
32828	Avalon Park	Orange	3%	2002	36%	24%	25,944	79	23
34758	Poinciana	Osceola	2%	2003	24%	3%	15,564	72	10
32832	Lake Nona south and Moss Park	Orange	1%	2013	32%	24%	14,287	49	18

Census ACS 2020-2024 5-year estimates by ZIP Code Tabulation Area (B25001, B25003, B25024, B25034, B25035). OpenFEMA NFIP redacted claims by reported ZIP, all years; "Ian claims" have a date of loss from September 27 to October 5, 2022.

Cite this: Orlando Mold Desk, "Orlando mold and moisture risk by ZIP code," https://orlandomolddesk.com/orlando-mold-and-moisture-data/, data as of October 29, 2026. Sources: Census ACS 2020-2024, OpenFEMA NFIP claims, NOAA.

Days with a dew point of 70°F or more, per year since 1974

Our count from NOAA NCEI daily mean dew point at Orlando International Airport (72205012815). The highest year was 2018, with 159.

Share of homes built before 1980, the 14 oldest metro ZIPs (%)

Census ACS 2020-2024 5-year estimates (B25034), by ZIP Code Tabulation Area. Labels show the last three digits.

Federal flood insurance claims per year, Orange, Seminole and Osceola counties

OpenFEMA NFIP redacted claims by year of loss, 1978 to 2026. 2004 was Charley, Frances and Jeanne; 2017 was Irma; 2022 was Ian. Flood policies only.

Major disaster declarations, Orange, Seminole and Osceola

Incident began	Event
October 5, 2024	Hurricane Milton
August 1, 2024	Hurricane Debby
August 27, 2023	Hurricane Idalia
November 7, 2022	Hurricane Nicole
September 23, 2022	Hurricane Ian
August 28, 2019	Hurricane Dorian
September 4, 2017	Hurricane Irma
October 3, 2016	Hurricane Matthew
August 18, 2008	Tropical Storm Fay
February 1, 2007	Severe Storms And Tornadoes
October 23, 2005	Hurricane Wilma
September 24, 2004	Hurricane Jeanne
September 13, 2004	Hurricane Ivan
September 3, 2004	Hurricane Frances

OpenFEMA Disaster Declarations Summaries, major disaster (DR) declarations for hurricanes, tropical storms, floods and severe storms in any of the three counties.

Lake Eola and the downtown Orlando skyline under a blue sky with summer clouds — Lake Eola on a summer afternoon. The clouds building over downtown are the start of the daily wet season storm. Photo: paws and prints / Unsplash

Questions about the data

Which Orlando ZIP codes have the oldest houses?

By share of homes built before 1980 (Census ACS 2020-2024): 32805 Parramore and west of downtown (74%), 32806 Delaney Park and Lake Como (73%), 32730 Casselberry south (68%), 32804 College Park (67%), 32809 Pine Castle (67%).

Which Orlando-area ZIP codes flooded most in Hurricane Ian?

By federal flood insurance claims with a date of loss in the Ian window: 34744 Kissimmee east (154), 32822 Conway east (114), 32765 Oviedo (109), 32732 Geneva (104), 32809 Pine Castle (98). Flood claims only count insured homes, so the real number of wet houses was higher.

Is Orlando more humid than it used to be?

By dew point, yes. Orlando International averaged 137 days a year with a mean dew point of 70°F or more over 2016-2024, against 118 over 1974-1990. One airport is one spot, but the direction is clear in the yearly counts.